Fuel and oil refresh mode ?

[paheerone]

Hit the electric button multiple times immediaty after you start your jeep and it will take you out of FORM. The only method that works everytime if the weather is warmer than -10 degrees celsius. Make sure to keeo the Jeep charged.

Sponsored

 

[Roobicon]

Just chiming in here. I don't drive long distances as I live in Boston and am almost always on battery. Filled up gas tank in October and in January the 4xe entered FORM mode (probably 1/2 a tank left). I thought, "oh, okay... doesn't want stale gas." I've run the tank dry 3-4 times since then, but I'm still in FORM mode. It's been 2+ months.

I've taken my Jeep out the highway for long stretches, but can't seem to get it to exit FORM as the oil temp will not go above 200º in this weather. I guess I'll just have to wait for spring, but it seems like the car should be smart enough to allow the oil temp to get high enough to perform an oil refresh.

Not the end of the world, obviously, but with gas at $4+ per gallon it's a little frustrating that I'm forced to use the ICE with a battery just sitting, fully charged, under the "hood."

 

[Helikenny]

I put the Jeep cold weather front grille cover on last week and it definitely helps. Engine temperatures climb to >90c oil and >95 c coolant within 15 minutes of driving. Doesn’t go much above this with continuous driving. Outside temps +10c. Front cover fits like a glove. I’ll remove it when temperatures go up in late spring. In and out of FORM regularly now as opposed to always in FORM. Still fighting issues with CHOC. Waiting on part…….. definitely not impressed with the PHEV design of this product!!!!!

 

[JollieOllie]

The temperature is rising just in time for the rising gas prices. All week I've been able to run in electric-only mode. I missed it through the winter but now I'm smiling ear to ear!
I will have to consider that Front Cover. Is it aftermarket or a Jeep/Mopar product? Link?

 

[BXFXJeep]

same here, since we have been mostly above 0C, I have stopped forcing the ICE on to warm up the cabin.

The battery is also lasting very close to the 40km range

 

[Grimmjpr]

Mine went into FORM a few days ago for the first time, I was just under 5000 miles at that time. It gets cold here but not crazy cold this year, low teens, I'm usually parked in the driveway plugged in and usually remote start. ICE will usually fire at around 27-28 F. If its not too cold even if ICE runs I can usually put it in electric mode once I "start" it. Taken a few road trips and had the oil changed in January.

Back to the FORM info, went into FORM in the morning as I got to work, drove home 10 miles, speeds 25-45 MPH, temp was 30ish F, engine and oil weren't quite up to temp by the time I got home.....pulled in the garage temp in garage was about 50 F, door open obviously, temps while idling weren't really getting high enough. Put a moving blanket over the grill and kept an eye on it, got to engine temp running between 208-217 ish F, and oil temp 206-212 ish F. Was inside the house and I heard the Jeep shut off......it hit the 30 min shutdown......

I restarted it and put it in D/N/R a few times every 10 minutes or so........at pretty much exactly 30 minutes it cleared FORM and the ICE shut down. Oil temp was above 206 F to about 212 F the whole time.

It appears that if FORM isn't cleared the time spent trying to get it out will reset once the Jeep shuts down or is shut off, and you'll need to start again to get the 30 ish minutes. So it appears you can't get the oil temp to 205 F + for 10 minutes 3 days in a row to clear FORM.

I've found that if I drive even at highway speeds the coolant and oil temp stay too low to clear FORM in the colder winter weather.

Maybe this will help someone.

 

[BXFXJeep]

and I heard the Jeep shut off......it hit the 30 min shutdown......

I restarted it and put it in D/N/R a few times every 10 minutes or so........at pretty much exactly 30 minutes it cleared FORM and the ICE shut down. Oil temp was above 206 F to about 212 F the whole time.

Disconnecting the door wires will keep it running beyond the 30 minutes.

 

[Helikenny]

The temperature is rising just in time for the rising gas prices. All week I've been able to run in electric-only mode. I missed it through the winter but now I'm smiling ear to ear!
I will have to consider that Front Cover. Is it aftermarket or a Jeep/Mopar product? Link?

Mopar 82215366 Front End Cold-Weather Cover for 18-22 Jeep Wrangler JL and Gladiator JT with Diesel Engine

 

[dblk65]

Having the same issue. I have had new oil, multiple new tanks of gas, two service appointments m, have run my car at >180 degrees for over 60 minutes and have a star case opened up. Today it started electric from my garage (~40 degrees). The minute that it hit 25 degrees on the senses temp it went to FORM.
The Jeep representatives have told me I bought a gas car, not electric. Yes , that’s a verbatim quote. Like I’m some sort of flipping moron. Totally dismissed the fact that the car is not operating as advertised.
inwould be interested in hearing people’s opinion on whether Jeep is advertising a product that they cannot deliver. This is sold as a PHEV that can run 26 miles pure electric. Not part of the year, but all the time. This is clearly not doing what they are selling. I think this is a set up for a lawsuit. You cannot get certified for a PHEV and get MPg certified and then not deliver to half the country for four months out of the year. It’s very reminiscent of the Volkswagen fiasco. I feel like this is something that needs more pressure from owners as well as the legal community. Ineeded this car for mostly the winter and as a daily driver during that time. Instead of a PHEV, I have a wrangler that’s taking a 600 pound battery around for no reason. Really disappointed.

I concur and am ready to sign on to any class action lawsuit.

 

[dblk65]

Others have fully described the numerous issues in great detail so I won't bore everyone other then to say my Rubicon 4xe, driven in Chicagoland, has been in FORM for 3 months. I've run it at temp to get out of form, idled it to do so, changed the oil, added gas etc etc...only to have it go back into form shortly after. Most recently changed the oil, 55 degrees outside, and it popped back into FORM even with 98% oil life left and a newly filled gas tank. Clearly this is not signaled by a sensor sniffing my gas an oil...additionally It is clear that everyone at my dealership is obfuscating and sidestepping. Maddeningly, a friend bought the sahara 4xe at the same time I bought mine...no issues. This 70K machine is not performing as promised, expected or advertised.

I for one am very much feeling that this, at least in some cases, is not solely about temp, My new 4xe, picked up in early spring 50 degree ish temps of 21 Worked flawlessly...these complications corresponded with the dealer flash upgrade on my system in early winter. Certainly, with warming temps more info will be forthcoming...but I am making sure the dealer is keeping exhaustive records as this is certainly going to end up in Chrysler's hands...

 

[mllcb42]

Jeep posted up on the 4xe FB group a bit more info regarding FORM:

Further information on the operation of Fuel Oil Refresh Mode (FORM) in the Wrangler 4xe

What is FORM?

Some customers have commented about repeated or extended incidents of Fuel Oil Refresh Mode (FORM) during the winter season. If this is the first time you're hearing about FORM, please refer first to the owner's manual information: https://msmownerassets.z13.web.core...ler_4xe/P125757_21_JL_H_SU_EN_USC_DIGITAL.pdf

The purpose of this message is to better communicate how the oil dilution portion of FORM works, why some people see it frequently but others don't, and how to get Electric drive mode back. We won't discuss the stale fuel or spark maintenance portions of FORM here, because they are more straightforward and not seasonal in nature.

What is happening in the engine?

Oil dilution FORM exists to reduce the possibility of engine damage caused by contaminants diluted in the engine oil. The contaminant of primary concern is gasoline, since it's continually injected directly into the combustion chamber while running. Although the 2.0-liter turbo 4-cylinder engine in the Wrangler 4xe is manufactured to precise tolerances, piston-ring-to-cylinder-bore sealing varies with engine operating temperature. Sealing is optimized for normal operating temperature. It's normal for some gasoline to make its way past the piston rings when the engine is cold. When the engine becomes warm, the piston rings expand and seal more tightly. Gasoline evaporates out of the hot engine oil, is routed through the Positive Crankcase Ventilation (PCV) system, and is ultimately used to make power.

Is the Wrangler 4xe different from other vehicles?

Oil dilution happens in all internal combustion engines. In conventional vehicles, trips of moderate length are enough to resolve the condition. This is why ICE vehicle owners’ manuals recommend frequent oil changes in vehicles used for short trips. In Plug-in Hybrid vehicles, some use cases lead to many cold engine startups but little or no engine operation at normal temperature. One example is a customer who uses their Plug-in Hybrid Electric Vehicle (PHEV) just like a Battery Electric Vehicle (BEV), except for 0 - 15 minutes' duration ICE operation during most drive cycles. This short engine operation might come during remote start to warm the cabin, or a short high-speed portion of an otherwise all-electric commute. With that type of usage, especially while the outdoor temperature is cold, it's possible for 100% of engine runtime to occur with the engine well below normal operating temperature. Gasoline dilutes into the oil whenever the engine runs, but never evaporates out again. Over time, the contamination level grows.

You won't see features like FORM in BEV's or HEV's, because they're not subject to this use case. But in PHEVs from other manufacturers, you’ll see warnings like "Low Engine Use Mode," "Maintaining Hybrid mode to protect engine," or "Engine Maintenance Mode," which all do the same thing as FORM.

How does the vehicle “know” about dilution? What does it do about it?

It's not practical to directly measure the proportion of gasoline diluted in the oil of a running engine. Before the launch of the Wrangler 4xe, Stellantis engineers built a model which accurately predicts the rate of dilution and evaporation inside the engine. This model runs at all times in the Wrangler's computers, and is based mainly on engine oil temperature, engine load and engine runtime. This is why it's important never to reset your Oil Life Indicator, if you have not changed the oil. To do that would introduce a large error in the modeled vs. actual dilution, and increase the probability of engine damage. Wrangler 4xe owners who encounter dilution FORM have commented that their engine oil smells like gasoline. This indicates that the dilution model is correctly identifying and mitigating a potentially damaging situation.

Dilution FORM in the Wrangler 4xe behaves differently, depending on modeled dilution level.

· Step 0: Normal Operation: Below a bottom threshold, vehicle operation is normal.

· Step 1: Moderate fuel dilution: Between the bottom and middle thresholds, silent start allows electric operation during a drive until the first ICE start. After that, you'll see the FORM message and the ICE will continue running until you shut the car off.

· Step 2: More fuel dilution: Between the middle and top thresholds, EV operation is not allowed. The ICE will start when you power up the vehicle and remain running until you shut down, or the bottom threshold is reached, whichever comes first.

· Step 3: More fuel dilution: Above the top threshold, EV operation is not allowed, and the vehicle will instruct you to perform an oil change.

Depending on outside temperature and how the vehicle is being operated, it could climb or descend this ladder. Based on thorough review of feedback from dealership service departments, directly from customers through Jeep Wave, and from social media postings this winter, Jeep believes some Wrangler 4xe customers' engines are rarely warming fully to operating temperature. For this reason, oil dilution is staying between the bottom and middle thresholds (“Step 1”) for extended periods of time in some vehicles operating in cold climates. The user's experience is therefore similar to frequently leaving and re-entering dilution FORM. Some customers may also be experiencing extended periods in “Step 2.” Jeep Engineering and Jeep Wave are not aware of any cases where FORM is acting differently than designed, or where an unrelated hardware issue is exacerbating FORM duration or frequency.

How can I get Electric mode back?

The use case which leads to this level of dilution can vary, but the path to resolution is always the same:

· Start the engine and allow engine oil to reach normal operating temperature. 169°F (76°C) is the minimum, but normal operating temperature is above 194°F (90°C). Elevated speed and load will warm the engine oil most quickly.

· Continue running the engine until FORM is no longer shown in the Message Center of the instrument cluster. Depending on the dilution level, oil temperature and outside temp, this can take from 20 minutes to 2.5 hours.

· In case the above steps are not possible, change the engine oil and reset the oil life indicator.

· Never reset the oil life indicator without changing the engine oil.

It's possible that some use cases lead to a lot of dilution and not enough evaporation to compensate. In this case FORM will return as long as the weather remains cold. We have high confidence that these frustrations will be resolved when the weather becomes warmer.

 

[bet325]

Jeep posted up on the 4xe FB group a bit more info regarding FORM:

Further information on the operation of Fuel Oil Refresh Mode (FORM) in the Wrangler 4xe

What is FORM?

Some customers have commented about repeated or extended incidents of Fuel Oil Refresh Mode (FORM) during the winter season. If this is the first time you're hearing about FORM, please refer first to the owner's manual information: https://msmownerassets.z13.web.core...ler_4xe/P125757_21_JL_H_SU_EN_USC_DIGITAL.pdf

The purpose of this message is to better communicate how the oil dilution portion of FORM works, why some people see it frequently but others don't, and how to get Electric drive mode back. We won't discuss the stale fuel or spark maintenance portions of FORM here, because they are more straightforward and not seasonal in nature.

What is happening in the engine?

Oil dilution FORM exists to reduce the possibility of engine damage caused by contaminants diluted in the engine oil. The contaminant of primary concern is gasoline, since it's continually injected directly into the combustion chamber while running. Although the 2.0-liter turbo 4-cylinder engine in the Wrangler 4xe is manufactured to precise tolerances, piston-ring-to-cylinder-bore sealing varies with engine operating temperature. Sealing is optimized for normal operating temperature. It's normal for some gasoline to make its way past the piston rings when the engine is cold. When the engine becomes warm, the piston rings expand and seal more tightly. Gasoline evaporates out of the hot engine oil, is routed through the Positive Crankcase Ventilation (PCV) system, and is ultimately used to make power.

Is the Wrangler 4xe different from other vehicles?

Oil dilution happens in all internal combustion engines. In conventional vehicles, trips of moderate length are enough to resolve the condition. This is why ICE vehicle owners’ manuals recommend frequent oil changes in vehicles used for short trips. In Plug-in Hybrid vehicles, some use cases lead to many cold engine startups but little or no engine operation at normal temperature. One example is a customer who uses their Plug-in Hybrid Electric Vehicle (PHEV) just like a Battery Electric Vehicle (BEV), except for 0 - 15 minutes' duration ICE operation during most drive cycles. This short engine operation might come during remote start to warm the cabin, or a short high-speed portion of an otherwise all-electric commute. With that type of usage, especially while the outdoor temperature is cold, it's possible for 100% of engine runtime to occur with the engine well below normal operating temperature. Gasoline dilutes into the oil whenever the engine runs, but never evaporates out again. Over time, the contamination level grows.

You won't see features like FORM in BEV's or HEV's, because they're not subject to this use case. But in PHEVs from other manufacturers, you’ll see warnings like "Low Engine Use Mode," "Maintaining Hybrid mode to protect engine," or "Engine Maintenance Mode," which all do the same thing as FORM.

How does the vehicle “know” about dilution? What does it do about it?

It's not practical to directly measure the proportion of gasoline diluted in the oil of a running engine. Before the launch of the Wrangler 4xe, Stellantis engineers built a model which accurately predicts the rate of dilution and evaporation inside the engine. This model runs at all times in the Wrangler's computers, and is based mainly on engine oil temperature, engine load and engine runtime. This is why it's important never to reset your Oil Life Indicator, if you have not changed the oil. To do that would introduce a large error in the modeled vs. actual dilution, and increase the probability of engine damage. Wrangler 4xe owners who encounter dilution FORM have commented that their engine oil smells like gasoline. This indicates that the dilution model is correctly identifying and mitigating a potentially damaging situation.

Dilution FORM in the Wrangler 4xe behaves differently, depending on modeled dilution level.

· Step 0: Normal Operation: Below a bottom threshold, vehicle operation is normal.

· Step 1: Moderate fuel dilution: Between the bottom and middle thresholds, silent start allows electric operation during a drive until the first ICE start. After that, you'll see the FORM message and the ICE will continue running until you shut the car off.

· Step 2: More fuel dilution: Between the middle and top thresholds, EV operation is not allowed. The ICE will start when you power up the vehicle and remain running until you shut down, or the bottom threshold is reached, whichever comes first.

· Step 3: More fuel dilution: Above the top threshold, EV operation is not allowed, and the vehicle will instruct you to perform an oil change.

Depending on outside temperature and how the vehicle is being operated, it could climb or descend this ladder. Based on thorough review of feedback from dealership service departments, directly from customers through Jeep Wave, and from social media postings this winter, Jeep believes some Wrangler 4xe customers' engines are rarely warming fully to operating temperature. For this reason, oil dilution is staying between the bottom and middle thresholds (“Step 1”) for extended periods of time in some vehicles operating in cold climates. The user's experience is therefore similar to frequently leaving and re-entering dilution FORM. Some customers may also be experiencing extended periods in “Step 2.” Jeep Engineering and Jeep Wave are not aware of any cases where FORM is acting differently than designed, or where an unrelated hardware issue is exacerbating FORM duration or frequency.

How can I get Electric mode back?

The use case which leads to this level of dilution can vary, but the path to resolution is always the same:

· Start the engine and allow engine oil to reach normal operating temperature. 169°F (76°C) is the minimum, but normal operating temperature is above 194°F (90°C). Elevated speed and load will warm the engine oil most quickly.

· Continue running the engine until FORM is no longer shown in the Message Center of the instrument cluster. Depending on the dilution level, oil temperature and outside temp, this can take from 20 minutes to 2.5 hours.

· In case the above steps are not possible, change the engine oil and reset the oil life indicator.

· Never reset the oil life indicator without changing the engine oil.

It's possible that some use cases lead to a lot of dilution and not enough evaporation to compensate. In this case FORM will return as long as the weather remains cold. We have high confidence that these frustrations will be resolved when the weather becomes warmer.

What FB forum did you find this on? I don't know how this works if i hardly ever, almost never have the ICE running and still get the FORM.

Jeep posted up on the 4xe FB group a bit more info regarding FORM:

Further information on the operation of Fuel Oil Refresh Mode (FORM) in the Wrangler 4xe

What is FORM?

Some customers have commented about repeated or extended incidents of Fuel Oil Refresh Mode (FORM) during the winter season. If this is the first time you're hearing about FORM, please refer first to the owner's manual information: https://msmownerassets.z13.web.core...ler_4xe/P125757_21_JL_H_SU_EN_USC_DIGITAL.pdf

The purpose of this message is to better communicate how the oil dilution portion of FORM works, why some people see it frequently but others don't, and how to get Electric drive mode back. We won't discuss the stale fuel or spark maintenance portions of FORM here, because they are more straightforward and not seasonal in nature.

What is happening in the engine?

Oil dilution FORM exists to reduce the possibility of engine damage caused by contaminants diluted in the engine oil. The contaminant of primary concern is gasoline, since it's continually injected directly into the combustion chamber while running. Although the 2.0-liter turbo 4-cylinder engine in the Wrangler 4xe is manufactured to precise tolerances, piston-ring-to-cylinder-bore sealing varies with engine operating temperature. Sealing is optimized for normal operating temperature. It's normal for some gasoline to make its way past the piston rings when the engine is cold. When the engine becomes warm, the piston rings expand and seal more tightly. Gasoline evaporates out of the hot engine oil, is routed through the Positive Crankcase Ventilation (PCV) system, and is ultimately used to make power.

Is the Wrangler 4xe different from other vehicles?

Oil dilution happens in all internal combustion engines. In conventional vehicles, trips of moderate length are enough to resolve the condition. This is why ICE vehicle owners’ manuals recommend frequent oil changes in vehicles used for short trips. In Plug-in Hybrid vehicles, some use cases lead to many cold engine startups but little or no engine operation at normal temperature. One example is a customer who uses their Plug-in Hybrid Electric Vehicle (PHEV) just like a Battery Electric Vehicle (BEV), except for 0 - 15 minutes' duration ICE operation during most drive cycles. This short engine operation might come during remote start to warm the cabin, or a short high-speed portion of an otherwise all-electric commute. With that type of usage, especially while the outdoor temperature is cold, it's possible for 100% of engine runtime to occur with the engine well below normal operating temperature. Gasoline dilutes into the oil whenever the engine runs, but never evaporates out again. Over time, the contamination level grows.

You won't see features like FORM in BEV's or HEV's, because they're not subject to this use case. But in PHEVs from other manufacturers, you’ll see warnings like "Low Engine Use Mode," "Maintaining Hybrid mode to protect engine," or "Engine Maintenance Mode," which all do the same thing as FORM.

How does the vehicle “know” about dilution? What does it do about it?

It's not practical to directly measure the proportion of gasoline diluted in the oil of a running engine. Before the launch of the Wrangler 4xe, Stellantis engineers built a model which accurately predicts the rate of dilution and evaporation inside the engine. This model runs at all times in the Wrangler's computers, and is based mainly on engine oil temperature, engine load and engine runtime. This is why it's important never to reset your Oil Life Indicator, if you have not changed the oil. To do that would introduce a large error in the modeled vs. actual dilution, and increase the probability of engine damage. Wrangler 4xe owners who encounter dilution FORM have commented that their engine oil smells like gasoline. This indicates that the dilution model is correctly identifying and mitigating a potentially damaging situation.

Dilution FORM in the Wrangler 4xe behaves differently, depending on modeled dilution level.

· Step 0: Normal Operation: Below a bottom threshold, vehicle operation is normal.

· Step 1: Moderate fuel dilution: Between the bottom and middle thresholds, silent start allows electric operation during a drive until the first ICE start. After that, you'll see the FORM message and the ICE will continue running until you shut the car off.

· Step 2: More fuel dilution: Between the middle and top thresholds, EV operation is not allowed. The ICE will start when you power up the vehicle and remain running until you shut down, or the bottom threshold is reached, whichever comes first.

· Step 3: More fuel dilution: Above the top threshold, EV operation is not allowed, and the vehicle will instruct you to perform an oil change.

Depending on outside temperature and how the vehicle is being operated, it could climb or descend this ladder. Based on thorough review of feedback from dealership service departments, directly from customers through Jeep Wave, and from social media postings this winter, Jeep believes some Wrangler 4xe customers' engines are rarely warming fully to operating temperature. For this reason, oil dilution is staying between the bottom and middle thresholds (“Step 1”) for extended periods of time in some vehicles operating in cold climates. The user's experience is therefore similar to frequently leaving and re-entering dilution FORM. Some customers may also be experiencing extended periods in “Step 2.” Jeep Engineering and Jeep Wave are not aware of any cases where FORM is acting differently than designed, or where an unrelated hardware issue is exacerbating FORM duration or frequency.

How can I get Electric mode back?

The use case which leads to this level of dilution can vary, but the path to resolution is always the same:

· Start the engine and allow engine oil to reach normal operating temperature. 169°F (76°C) is the minimum, but normal operating temperature is above 194°F (90°C). Elevated speed and load will warm the engine oil most quickly.

· Continue running the engine until FORM is no longer shown in the Message Center of the instrument cluster. Depending on the dilution level, oil temperature and outside temp, this can take from 20 minutes to 2.5 hours.

· In case the above steps are not possible, change the engine oil and reset the oil life indicator.

· Never reset the oil life indicator without changing the engine oil.

It's possible that some use cases lead to a lot of dilution and not enough evaporation to compensate. In this case FORM will return as long as the weather remains cold. We have high confidence that these frustrations will be resolved when the weather becomes warmer.

Which 4xE FB forum did you find this on? It doesn't explain why i'm getting FORM when i hardly ever (almost never) use the ICE...i mean why FORM when the engine doesn't run.

 

[mllcb42]

It was posted on 4xeforums.com and in the 4xe Fans FB group.

Can you define what "hardly ever" means? How long has it been since you filled up the tank?

 

[BXFXJeep]

What FB forum did you find this on? I don't know how this works if i hardly ever, almost never have the ICE running and still get the FORM.



Which 4xE FB forum did you find this on? It doesn't explain why i'm getting FORM when i hardly ever (almost never) use the ICE...i mean why FORM when the engine doesn't run.

Most likely because it's a Sarah

 

[bet325]

It was posted on 4xeforums.com and in the 4xe Fans FB group.

Can you define what "hardly ever" means? How long has it been since you filled up the tank?

hardly ever is never. FORM kicks in several weeks after i reset the oil. filling the tank doesn't clear it even after i have to run the ICE just to add gas. Question for the jeep guy is why it wants to "cleanse" the oil when the ICE only runs to use gas to clear FORM, i.e. 4 gallons worth - seems like i'm chasing my tail on this. Also, since my trips are generally less than 20 miles, the engine never runs enough to get 20 minutes at "normal operating temperature" and here in colorado, we don't have the kind of ambient to get to 194 deg. but 3 or 4 months out of the year. seems kinda stupid to go on a freeway or find tailer to tow to get it to temperature for 20 minutes to 2 1/2 hours to clear form on an engine that only runs to clear form!

Sponsored