JSCAN

[AndySpill]

Thanks that's the kind of info I need before I get started.

Please don't take this advice so quickly at least, without considering your situation.

You will pay more than you need to.

It is complete nonsense that you need to buy a more expensive security gateway bypass when a cheaper FCA 12+8 cable will suffice.

I mean if you've got other needs for a security gateway bypass that's one thing. If your using Jscan super frequently maybe another.

This notion that 12+8 cables become fray beyond THE most rarest of exceptions is utter crap. I've had mine for years. I plug in Jscan now and then to reconfigure proximity locks after a dealer trip. It's as good as new.

Sure, do get the SGW extension cable. But unless you have severe physical restrictions or meet the above criterion, you don't need the security gateway bypass.

I personally spoke to Jscan the other day. https://www.jlwranglerforums.com/forum/threads/jscan.158847/post-3270461 They confirmed that using a 12+8 cable is perfectly fine.

Really, a security gateway bypass is necessary even though Jscan puts this link out, please.

https://jscan.net/fca-security-gateway-module-basic-info-and-location/

Please, feel free to put a laugh icon below. Failure to explain yourself in a post though should be proof positive to @billjr that I know that I'm talking about.

P.S. wait for it.

Piotr Bialik the inventor of Jscan uses a security gateway bypass, not a 12+8 cable. It's true.

Does Piotr constantly use his own Jscan product for software development: yes. Do most people use it anywhere as frequently as he does, no.

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[AndySpill]

Wait (in mock derision), do note that if you don't buy a security gateway bypass @billjr you will not be able to operate your vehicle's radio during the time that you're working with Jscan and a 12+8 cable.

Frankly, I call this a feature. I'm trying to carefully follow directions when working with Jscan and prefer the silence of no radio on.

Sadly though, the other day I looked at my 12+8 cable and said, "good morning 12+8 cable, how are you today?"

..and this

instantly turned to this

like my wife's hair leaving an air conditioned environment into a super crazy hazy hot and humid day (not)

 

[billjr]

Please don't take this advice so quickly at least, without considering your situation.

You will pay more than you need to.

It is complete nonsense that you need to buy a more expensive security gateway bypass when a cheaper FCA 12+8 cable will suffice.

I mean if you've got other needs for a security gateway bypass that's one thing. If your using Jscan super frequently maybe another.

This notion that 12+8 cables become fray beyond THE most rarest of exceptions is utter crap. I've had mine for years. I plug in Jscan now and then to reconfigure proximity locks after a dealer trip. It's as good as new.

Sure, do get the SGW extension cable. But unless you have severe physical restrictions or meet the above criterion, you don't need the security gateway bypass.

I personally spoke to Jscan the other day. https://www.jlwranglerforums.com/forum/threads/jscan.158847/post-3270461 They confirmed that using a 12+8 cable is perfectly fine.

Really, a security gateway bypass is necessary even though Jscan puts this link out, please.

https://jscan.net/fca-security-gateway-module-basic-info-and-location/

Please, feel free to put a laugh icon below. Failure to explain yourself in a post though should be proof positive to @billjr that I know that I'm talking about.

I do plan on doing a lot of reading. This isn't something I have to do quickly or at all for that matter. Also I know like everything else there are always conflicting bits of information and it's up to me, with help from people like yourself, to try and sort through everything and come to a conclusion that seems to work for me. I appreciate you taking the time to share a bit of your what sounds like a vast knowledge on this subject.

 

[AndySpill]

I do plan on doing a lot of reading. This isn't something I have to do quickly or at all for that matter. Also I know like everything else there are always conflicting bits of information and it's up to me, with help from people like yourself, to try and sort through everything and come to a conclusion that seems to work for me. I appreciate you taking the time to share a bit of your what sounds like a vast knowledge on this subject.

I have no care who you buy from. Please be suspect of anyone swaying you to a more expensive gateway security bypass device's knowledge or loyalties unless you meet its criterion.

...You want the features of a Z Automotive Tazer (a security bypass gateway with lots of additinal features) and are willing to pay the price, buy all means go for it, in lieu of the 12+8 cable.

You need someone to install that security gateway bypass because you are severely mobility restricted: go for it.

(I own and use a tazer, but I don't advise people to do what I do unless their use case and budget is mine. I first used a 12+8 cable.)

Your programming Jscan every now and then.....if a fray 12+8 cable was common it would be a thing on the forum....I can't find a single thread of someone actually reporting this anymore than if there is, you don't make choices based on 1 or 2 outliers.

Failed Aux batteries: ton's of posts here on that. That's a thing. Frayed 12+8 cables: not a thing.

 

[billjr]

Wait (in mock derision), do note that if you don't buy a security gateway bypass @billjr you will not be able to operate your vehicle's radio during the time that you're working with Jscan and a 12+8 cable.

Frankly, I call this a feature. I'm trying to carefully follow directions when working with Jscan and prefer the silence of no radio on.

Sadly though, the other day I looked at my 12+8 cable and said, "good morning 12+8 cable, how are you today?"

..and this

instantly turned to this

like my wife's hair leaving an air conditioned environment into a super crazy hazy hot and humid day (not)

WOW, really ??????

 

[LAM]

First you can download the JScan app and play with it in demo mode without even paHing for the license.

Second if after you get the license you plug the Vlinker into your OBD port without the security bypass in principle you can read all your data and error codes without actually changing anything.

Recommend just getting one of the OBD adapters that JScan recommends. And the cheap 12 8 bypass cable works fine.

The program checks a lot of parameters that won’t pertain to your vehicle so there is a learning curve.

 

[AndySpill]

WOW, really ??????

Not really.

In truth I could practically sell my 12+8 cable as new. Oh, and while a used security gateway bypass may (or may not) sell at a better percentage of its original price than a used 12+8 cable, this is a silly argument.

This cable's been described as a clunky...a dinosaur. Accordingly I would advise (sarcasm) not buying one on Amazon that bears resemblance to either of these two pictures, otherwise if you get one with a decent rating you'll be fine.

 

[LSJKU]

I agree with LAM, any of the recommended OBD adapters would work, including the 12+8 cable adapter. I went with the OBDLink II MX+ because it also allows me to use Forescan on my Raptor as well as the Jeep. Marry, make changes, and unmarry. Rinse and repeat for either vehicle.

Forescan to the Raptor is what the Tazer is to the Jeep. Goes much deeper than the std SCT tuner I have for the Raptor engine tunes. I recently used the OBDLInk MX+ and Forescan to reset the live wire shocks zero points after the 50K suspension rebuild adding SDI top hats up front and Icon +2.5 springs in back. Worked like a charm.

But be aware of your intended use, all the OBD adapters have limitations. I was doing data logging runs in the Jeep with the OBDLink MX+ and was having difficulty recording the PIDs I wanted to look at. I decided to record all the PIDs at once. After a few seconds the OBDLink MX+ crapped out. Data overload. Too many PIDs from the Jeep that can be recorded by the device. That was part of my learning curve they don't tell you about in the instructions.

 

[Rhinebeck01]

I agree with LAM, any of the recommended OBD adapters would work, including the 12+8 cable adapter. I went with the OBDLink II MX+ because it also allows me to use Forescan on my Raptor as well as the Jeep. Marry, make changes, and unmarry. Rinse and repeat for either vehicle.

Forescan to the Raptor is what the Tazer is to the Jeep. Goes much deeper than the std SCT tuner I have for the Raptor engine tunes. I recently used the OBDLInk MX+ and Forescan to reset the live wire shocks zero points after the 50K suspension rebuild adding SDI top hats up front and Icon +2.5 springs in back. Worked like a charm.

But be aware of your intended use, all the OBD adapters have limitations. I was doing data logging runs in the Jeep with the OBDLink MX+ and was having difficulty recording the PIDs I wanted to look at. I decided to record all the PIDs at once. After a few seconds the OBDLink MX+ crapped out. Data overload. Too many PIDs from the Jeep that can be recorded by the device. That was part of my learning curve they don't tell you about in the instructions.

@LSJKU

If the OBDLink MX+ "crapped out", was overwhelmed with the excessive data you threw at it, you can be sure many/most of the other less expensive, JSCAN recommended offerings would surely have done the same.

The OBDLink MX+ followed closely by the Vgate vLinker MC+ are the picks of the litter so to speak in regard to adapters recommended by JSCAN for use with the JL/JT. They both are known to be quite capable and perform tasks rather quickly compared to other offerings.

You are using a dedicated security gateway bypass module. How's that piece of hardware working out for you?

Can you imagine riding around with a red 14" long 12+8 Chrysler Cable dangling down, 24/7, 365.

I would be curious to hear more about your experiences with JSCAN and your 2025 JL. Your posts can and will be helpful to others.

Oh... What adaptations have you implemented with JSCAN ? Doing much with live JSCAN ?

 

[BMCGC]

Deleted my last post after doing a bit more reading.

Why do I need the SGW extension cable.

It looks like I can use the MC+ with the 12+8 cable, program my headlights and locks, then remove the MC+, plug my gateway cables back in and be done.

Again, this is my wifes DD, other than those two items, she is not letting me touch her jeep.

I'm a carb guy, still way behind the 8-ball when it comes to electronics. The TV remote still confuses me.

 

[Rhinebeck01]

Deleted my last post after doing a bit more reading.

Why do I need the SGW extension cable.

It looks like I can use the MC+ with the 12+8 cable, program my headlights and locks, then remove the MC+, plug my gateway cables back in and be done.

Again, this is my wifes DD, other than those two items, she is not letting me touch her jeep.

I'm a carb guy, still way behind the 8-ball when it comes to electronics. The TV remote still confuses me.

@BMCGC

Seeing you plan to do the deed and then be done with it..... do nothing further and your $ are tight..... then yes, you'd be fine not going with the ZAutomotive security gateway bypass extension cable...

? .... How are you going to deal with Stop/Start in regard to that / her JL.

IF, if you plan on getting a SmartStopStart unit for the vehicle, then yes, suggest you do go with the ZAutomotive security gateway bypass extension cable...

Oh... for that vehicle do consider..
Fogs with High Beams:

ADAPTATION ---> Vehicle user settings --> Front Fog Lamp Dropout Enable On/Off --> Target Value = Deactivated

 

[LSJKU]

@LSJKU

If the OBDLink MX+ "crapped out", was overwhelmed with the excessive data you threw at it, you can be sure many/most of the other less expensive, JSCAN recommended offerings would surely have done the same.

The OBDLink MX+ followed closely by the Vgate vLinker MC+ are the picks of the litter so to speak in regard to adapters recommended by JSCAN for use with the JL/JT. They both are known to be quite capable and perform tasks rather quickly compared to other offerings.

You are using a dedicated security gateway bypass module. How's that piece of hardware working out for you?

Can you imagine riding around with a red 14" long 12+8 Chrysler Cable dangling down, 24/7, 365.

I would be curious to hear more about your experiences with JSCAN and your 2025 JL. Your posts can and will be helpful to others.

Oh... What adaptations have you implemented with JSCAN ? Doing much with live JSCAN ?

I thought I should reply to your request. I have only played with the demo version of JSCAN thus far. I was looking at JSCAN for data logging and their graphics presentation, as well as an alternative to the Tazer. The JSCAN graphics look superior to the graphics I got with the OBDLink. But I found the OBDLink to be adequate right now. So I did not buy the fully functional version of JSCAN.

I also have not run into anything I could not adjust on the Jeep within the Tazer environment. And it makes a world of difference in cleaning up the wiring behind the dash using that Tazer mount you recommended. I could not imagine having my Tazer hanging from that orange 12+8 cable dangling from behind the dash, even if I tie-wrapped it up out of reach. Before I installed the Tazer mount I had everything just stuffed up in the factory wiring behind the dash waiting to be tie-wrapped. I got irritated when everything fell down and dangled across my knee a couple times.

If I get to the point I need better graphics than the OBDLink provides, i will certainly go the full version of JSCAN. But right now, the Tazer and OBDLink II MX+ fit the bill for me.

 

[LSJKU]

@LSJKU

If the OBDLink MX+ "crapped out", was overwhelmed with the excessive data you threw at it, you can be sure many/most of the other less expensive, JSCAN recommended offerings would surely have done the same.

The OBDLink MX+ followed closely by the Vgate vLinker MC+ are the picks of the litter so to speak in regard to adapters recommended by JSCAN for use with the JL/JT. They both are known to be quite capable and perform tasks rather quickly compared to other offerings.

You are using a dedicated security gateway bypass module. How's that piece of hardware working out for you?

Can you imagine riding around with a red 14" long 12+8 Chrysler Cable dangling down, 24/7, 365.

I would be curious to hear more about your experiences with JSCAN and your 2025 JL. Your posts can and will be helpful to others.

Oh... What adaptations have you implemented with JSCAN ? Doing much with live JSCAN ?

Oh, and Alphawolf already mentioned the problem with data logging all the PIDs. He said even the commercial scanner they use at the dealer could not handle the data flow when trying to log all PIDs. Best practice is to isolate the specific PIDs of interest and only log those. That's where I am at now, trying to figure out how to change the logged PIDs within the OBDLink environment. I haven't had time to play with it a lot as I've been in K'ville and the Jeep in Houston. I had to use the Raptor to move some stuff up to Kerrville.

 

[BMCGC]

@BMCGC

Seeing you plan to do the deed and then be done with it..... do nothing further and your $ are tight..... then yes, you'd be fine not going with the ZAutomotive security gateway bypass extension cable...

? .... How are you going to deal with Stop/Start in regard to that / her JL.

IF, if you plan on getting a SmartStopStart unit for the vehicle, then yes, suggest you do go with the ZAutomotive security gateway bypass extension cable...

Oh... for that vehicle do consider..
Fogs with High Beams:

ADAPTATION ---> Vehicle user settings --> Front Fog Lamp Dropout Enable On/Off --> Target Value = Deactivated

Money is not that tight. I spend what I need to spend and try not to spend what I do not need to spend. The auto start/stop drives me nuts, but she is ok with it. My misses raised 3 kids, went to school 10 years and worked 30 years. Having her Jeep exactly the way she wants it is the least that I can do for her. My F250 stickered at 82k. If I see one today that I like better, I'm driving it home. can't take it with me...

 

[AndySpill]

I could not imagine having my Tazer hanging from that orange 12+8 cable dangling from behind the dash, even if I tie-wrapped it up out of reach.

If you install a JL tazer it will connect to the 8 pin and 12 pin factory cable that you disconnected from the security gateway, not first an FCA 12+8 cable (i.e. what I think you call the orange cable)
as appears below:

In fact, if you also decide to use Jscan (on top of a JL Tazer,) and one of Jscan's recommended Bluetooth ODB2 readers, as long as you have that Tazer plugged in (in addition to the features it offers it is (and because it is) also a security gateway bypass) you will be able to plug that recommended Bluetooth ODB2 reader directly into the factory ODB2 near your left knee and use Jscan to not only read but write changes.

You only need to plug the Jscan recommended Bluetooth ODB2 reader temporarily into the orange cable above (which if you use sucah a cable plugs into the factory 12+8 cables that you disconnected from the factory security gateway, if you do not have a security gateway bypass, like a Tazer or ECRI device, and you wish to be able to write Jscan changes.

Before I installed the Tazer mount I had everything just stuffed up in the factory wiring behind the dash waiting to be tie-wrapped. I got irritated when everything fell down and dangled across my knee a couple times.

I've never felt the need to have a Tazer mount. The factory 12+8 cables and JL Tazer tuck behind for me without ever falling down. "To each his own."

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