Intermittent key fob?

TrailJoy

Well-Known Member
Joined
Oct 22, 2019
Messages
454
Reaction score
253
Location
Northern BC, Canada
Vehicle(s)
2020 JLUS, HellaYella
Has anyone had problems with their fob randomly just not working? The “fob not detected” message came up once for my husband and twice for me.
It’s a 2020 JLUS with less than 600 total miles.

Today I drove to the ski hill and couldn’t lock the doors (not with proximity lock, or by pressing the button on the FOB). I made sure (three times) that I could still start the Jeep by pressing the fob into the button (I could) then I locked the doors from the inside and sent my husband a message warning him of what happened (on the off chance it won’t start when I got back), and went skiing.

When I got back the fob was working as normal. As mentioned the Jeep is brand new so this shouldn’t be a battery problem.

Tomorrow I’m going to lock the doors from the inside then use the key to unlock it and hope the alarm doesn’t go off (if it does and my fob isn’t working then I can’t disable the alarm which means I can’t lock the doors at all). Then what?





Advertisement

 

GreyFox

Well-Known Member
First Name
Brandy
Joined
Oct 11, 2018
Messages
3,051
Reaction score
5,897
Location
Ohio
Vehicle(s)
17 JKU, 19 JL
Yes, it happens periodically. I assume it's because I keep the FOB in my backpack/purse. Usually when it does this, I just wait a few seconds and try again. No biggie, it starts.
 

MtCamper

Well-Known Member
First Name
Ken
Joined
Mar 30, 2018
Messages
250
Reaction score
262
Location
NW Montana and Yuma Az
Vehicle(s)
2018 jlUR White Rubi, 2018 GMC 3500 Duramax, 2014 Passat TDI
Occupation
Snowbird
The battery in my FOB failed at about 8 months. It took the dealer two days to figure it just needed a new battery. The OEM one is stupid expensive so get one from Amazon or Ebay. I keep a spare on hand. Size 2450 if I remember right.
 

JIMBOX

Well-Known Member
First Name
JAMES
Joined
Feb 19, 2018
Messages
1,707
Reaction score
1,670
Location
FERNLEY NV
Vehicle(s)
2018 HELLAYELLA JLU SAHARA/2016 "STINGER YELLOW" RAM
Give your SECOND SET a try at the same time and see if the problem continues--then it's real dealer time !

Good luck

JIMBO
 

dsgrey

Well-Known Member
First Name
Kevin
Joined
Apr 19, 2019
Messages
505
Reaction score
395
Location
Texas
Vehicle(s)
2019 JLU
Vehicle Showcase
1
As mentioned the Jeep is brand new so this shouldn’t be a battery problem.
Never assume. It could be that simple and while it shouldn't be the FOB battery, it could be the issue. Especially if the other FOB works w/o issue.
 

sdynak

Well-Known Member
Joined
Sep 18, 2018
Messages
196
Reaction score
214
Location
NJ
Vehicle(s)
18 JLU Sahara
Have never had a problem with either of my FOB's as you have but as others say just because it is new doesn't mean the battery is good. You may have just gotten a bad battery. It can happen and the easiest to try along with your other fob before going down the long road.
 
OP
TrailJoy

TrailJoy

Well-Known Member
Joined
Oct 22, 2019
Messages
454
Reaction score
253
Location
Northern BC, Canada
Vehicle(s)
2020 JLUS, HellaYella
  • Thread starter
  • Thread Starter
  • #7
Thank you. I wasn't at home when this happened so I didn't have the second FOB with me to test it out. The lights still lit up though when I pressed the buttons (which is why I think it's as if the Jeep just isn't receiving the signal), so I know the battery was connecting. And I did wait a few seconds and tried again (no luck) but maybe I didn't wait long enough. I also went around and opened/closed every door thinking maybe one wasn't closed properly.

As for the three "FOB not detected" warnings when starting the Jeep, the proximity entry worked to open the door so there's no reason why it wouldn't work to start the vehicle. Having the FOB not work AT ALL yesterday was a first (and would have made it the fourth time I had to press the button using the FOB to start it).

I'm the primary driver but my husband does drive it as well (he now refers to his truck as "the sofa" LOL), so maybe I'll ask him if we can swap FOBs and see if it still occurs before bringing it in.

If this happened once or twice I would maybe blow it off, but I'm starting to think that something might actually be wrong. I just don't know what (and I don't want to take it in YET if there is something else I could try first). She's in for a tire change right now and I miss her already. LOL
 

sdynak

Well-Known Member
Joined
Sep 18, 2018
Messages
196
Reaction score
214
Location
NJ
Vehicle(s)
18 JLU Sahara
It always helps to know yourself a bit before bringing it in if possible. In this case finding out if it is related to one or both fobs is a huge help to yourself and the dealer. It will be worth that test itself knowing the outcome. Hopefully it is something simple.
 

JeepCares

Well-Known Member
Joined
Feb 1, 2018
Messages
3,993
Reaction score
1,772
Location
Auburn Hills, MI
Vehicle(s)
JL
Has anyone had problems with their fob randomly just not working? The “fob not detected” message came up once for my husband and twice for me.
It’s a 2020 JLUS with less than 600 total miles.

Today I drove to the ski hill and couldn’t lock the doors (not with proximity lock, or by pressing the button on the FOB). I made sure (three times) that I could still start the Jeep by pressing the fob into the button (I could) then I locked the doors from the inside and sent my husband a message warning him of what happened (on the off chance it won’t start when I got back), and went skiing.

When I got back the fob was working as normal. As mentioned the Jeep is brand new so this shouldn’t be a battery problem.

Tomorrow I’m going to lock the doors from the inside then use the key to unlock it and hope the alarm doesn’t go off (if it does and my fob isn’t working then I can’t disable the alarm which means I can’t lock the doors at all). Then what?
Hi TrailJoy,
We're sorry to hear about this. Should you decide to have your dealer look into this, we recommend reaching out to Canadian Customer Care if additional support is needed. I have included a link with their contact information below.
https://www.fcagroup.com/en-US/footer/Pages/contacts.aspx
Alex
JeepCares
 
OP
TrailJoy

TrailJoy

Well-Known Member
Joined
Oct 22, 2019
Messages
454
Reaction score
253
Location
Northern BC, Canada
Vehicle(s)
2020 JLUS, HellaYella
  • Thread starter
  • Thread Starter
  • #10

viper88

Well-Known Member
First Name
Nick
Joined
Apr 22, 2018
Messages
3,195
Reaction score
2,944
Location
IL
Vehicle(s)
'19 JLR 2.0T
I noticed in certain areas of Downtown Chicago radio frequencies must interfere with my FOB or remotes. Maybe because of all the high-rises or concentration of cell towers? This is not FOB or vehicle specific. Happens with my other cars in the same areas. New batteries is always a quick try and not a bad idea every couple of years.
 
Last edited:

Indio

Well-Known Member
Joined
Jun 30, 2016
Messages
401
Reaction score
374
Location
Chicagoland
Vehicle(s)
1998 Jeep TJ, 1985 Jeep CJ-7, 1972 Series III Land Rover
Occupation
Procrastinator
I just bought a new economy car, and it uses something called a "key" to unlock the doors and start the engine. :) Seriously though, I love it. In contrast, both key fobs on our van have malfunctioned, causing among other things the auto-liftgate to open on it's own. Does the base JL Sport come with a regular key?
 

GreyFox

Well-Known Member
First Name
Brandy
Joined
Oct 11, 2018
Messages
3,051
Reaction score
5,897
Location
Ohio
Vehicle(s)
17 JKU, 19 JL
I just bought a new economy car, and it uses something called a "key" to unlock the doors and start the engine. :) Seriously though, I love it. In contrast, both key fobs on our van have malfunctioned, causing among other things the auto-liftgate to open on it's own. Does the base JL Sport come with a regular key?
Not a regular key used for starting, but a "key" in the FOB to unlock the doors, glovebox, console and rear gate.
 
OP
TrailJoy

TrailJoy

Well-Known Member
Joined
Oct 22, 2019
Messages
454
Reaction score
253
Location
Northern BC, Canada
Vehicle(s)
2020 JLUS, HellaYella
  • Thread starter
  • Thread Starter
  • #14
Not a regular key used for starting, but a "key" in the FOB to unlock the doors, glovebox, console and rear gate.
Actually, I'm curious. Has anyone ever removed the battery in their FOB to test if the push button start still works by using the FOB? Also, if you lock the doors from the inside, then use the key to unlock the doors, does the alarm still trigger?
 

Advertisement




TopLift Pros
 



Advertisement
Top