Keyfob stopped working...

xjackhunter · 07-28-2019, 05:27 PM

Hello,
I recently had a tire replaced and upon getting my car back, my key stopped working. I replaced the battery to no avail. Does anyone know what could have gone wrong or what I should do to fix my problem?
Thanks!

delmarco · 07-29-2019, 01:04 PM

Quote:

Originally Posted by xjackhunter

Hello,
I recently had a tire replaced and upon getting my car back, my key stopped working. I replaced the battery to no avail. Does anyone know what could have gone wrong or what I should do to fix my problem?
Thanks!

Check your fuses for a blown fuse:

xjackhunter · 07-29-2019, 05:47 PM

Quote:

Originally Posted by delmarco

Quote:

Originally Posted by xjackhunter

Hello,
I recently had a tire replaced and upon getting my car back, my key stopped working. I replaced the battery to no avail. Does anyone know what could have gone wrong or what I should do to fix my problem?
Thanks!

Check your fuses for a blown fuse:

I checked all of the fuses related to the key and none of them were blown... any other ideas?

delmarco · 07-30-2019, 08:22 AM

Quote:

Originally Posted by xjackhunter

I checked all of the fuses related to the key and none of them were blown... any other ideas?

Door actuators. Does the central locking button work consistently? meaning get in the car and unlock and lock the doors 10 times. Does it click lock and click unlock each time? or is it sticking some of the the times?

xjackhunter · 08-07-2019, 05:13 PM

Quote:

Originally Posted by delmarco

Quote:

Originally Posted by xjackhunter

I checked all of the fuses related to the key and none of them were blown... any other ideas?

Door actuators. Does the central locking button work consistently? meaning get in the car and unlock and lock the doors 10 times. Does it click lock and click unlock each time? or is it sticking some of the the times?

The locks work fine, the key just doesn't do anything and I can't use it to start the car without the key in the ignition anymore.

1sicke92 · 08-07-2019, 05:16 PM

I had this happen to me last month, even though BMW says that the key fobs are charged while driving I doubt that because of what happened to me. Long story short, I used my spare key and the car would unlock and lock remotely like it's supposed to. For some reason my key fob just ran out of juice or whatever. It still worked if I put it in the ignition and started the car. I have no idea why this is though...

xjackhunter · 08-07-2019, 05:20 PM

Quote:

Originally Posted by 1sicke92

I had this happen to me last month, even though BMW says that the key fobs are charged while driving I doubt that because of what happened to me. Long story short, I used my spare key and the car would unlock and lock remotely like it's supposed to. For some reason my key fob just ran out of juice or whatever. It still worked if I put it in the ignition and started the car. I have no idea why this is though...

I replaced the battery in the key to no avail. Unfortunately I don't have a spare so I guess I'm shit out of luck unless someone smarter than me has an idea.😂

1sicke92 · 08-09-2019, 01:38 PM

Quote:

Originally Posted by xjackhunter

I replaced the battery in the key to no avail. Unfortunately I don't have a spare so I guess I'm shit out of luck unless someone smarter than me has an idea.😂

Sorry to hear that man. I hope you get it figured out as I have no idea what could be happening? Maybe the receiver?

xjackhunter · 08-09-2019, 01:48 PM

Quote:

Originally Posted by 1sicke92

Quote:

Originally Posted by xjackhunter

I replaced the battery in the key to no avail. Unfortunately I don't have a spare so I guess I'm shit out of luck unless someone smarter than me has an idea.😂

Sorry to hear that man. I hope you get it figured out as I have no idea what could be happening? Maybe the receiver?

I don't know. I'll have to research where that is located. Really want to avoid visiting the stealership if possible.

1sicke92 · 08-09-2019, 06:02 PM

I think, if I am remembering correctly, near the third brake light on the rear windshield. Try that and see if it works or just got to a local BMW indy. Don't go to the dealer.

Kaz26 · 08-10-2019, 12:11 AM

Have you tried to resync/reprogram it yet? It's possible the battery died, then after you put the new battery in, it lost memory and needs to be resynced to the car. I've heard that these keys resync once you put them into the slot in the car, others have said you need to program them. I will try to find the procedure. What model car is yours?

Also, if you find out what is wrong with it, please post the results.

Thanks

gbalthrop · 08-10-2019, 12:54 AM

Quote:

Originally Posted by xjackhunter

...I recently had a tire replaced and upon getting my car back, my key stopped working. I replaced the battery to no avail. Does anyone know what could have gone wrong or what I should do to fix my problem? Thanks!

Quote:

Originally Posted by xjackhunter

I checked all of the fuses related to the key and none of them were blown... any other ideas?

Quote:

Originally Posted by xjackhunter

I don't know. I'll have to research where that is located. Really want to avoid visiting the stealership if possible.

I presume this is the 2008 335i E93 you identified in prior thread? If so, here is the TIS circuit diagram for the Remote Entry which appears to use the Interior Rear View Mirror as the FBD Receiver, which is powered via fuse F63:
https://www.newtis.info/tisv2/a/en/e...te-key/vSvyPqq

Here's the F63 circuit; if F63 blown, you would have NO gear lighting (on left of shift lever):
https://www.newtis.info/tisv2/a/en/e93-335i-cab/jeQATDZ

In the sedan & wagon, the Aerial Diversity, located above the rear glass, contains the FBD Receiver, but that does NOT appear to be the case for the Convertible. Here's YOUR Aerial Diversity circuit:
https://www.newtis.info/tisv2/a/en/e...memory/jVv0rwL

Please let us know what you find,
George

xjackhunter · 08-10-2019, 12:57 AM

Welp... my issue has been solved.
I had my rear view mirror harness unplugged due to an issue I was having and apparently that was the cause. I was working on the mirror today and plugged it back in... this immediately solved the problem.

Sorry for wasting everyone's time, but I appreciate all of your help.

Thanks!

07-28-2019, 05:27 PM	#1
xjackhunter Private First Class 15 Rep 184 Posts Drives: BMW 335i Join Date: Jan 2019 Location: Georgia iTrader: (0)	Keyfob stopped working... Hello, I recently had a tire replaced and upon getting my car back, my key stopped working. I replaced the battery to no avail. Does anyone know what could have gone wrong or what I should do to fix my problem? Thanks!
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08-07-2019, 05:16 PM	#6
1sicke92 Captain 69 Rep 656 Posts Drives: 09 E92 N54 Join Date: Sep 2009 Location: Long Beach, CA iTrader: (0)	I had this happen to me last month, even though BMW says that the key fobs are charged while driving I doubt that because of what happened to me. Long story short, I used my spare key and the car would unlock and lock remotely like it's supposed to. For some reason my key fob just ran out of juice or whatever. It still worked if I put it in the ignition and started the car. I have no idea why this is though... __________________ FBO + PURE STAGE 2 + MHD FLASH
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08-09-2019, 06:02 PM	#10
1sicke92 Captain 69 Rep 656 Posts Drives: 09 E92 N54 Join Date: Sep 2009 Location: Long Beach, CA iTrader: (0)	I think, if I am remembering correctly, near the third brake light on the rear windshield. Try that and see if it works or just got to a local BMW indy. Don't go to the dealer. __________________ FBO + PURE STAGE 2 + MHD FLASH
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08-10-2019, 12:11 AM	#11
Kaz26 Second Lieutenant 34 Rep 295 Posts Drives: 2008 335i Alpinweiß Sedan Join Date: Sep 2017 Location: Los Angeles iTrader: (0)	Have you tried to resync/reprogram it yet? It's possible the battery died, then after you put the new battery in, it lost memory and needs to be resynced to the car. I've heard that these keys resync once you put them into the slot in the car, others have said you need to program them. I will try to find the procedure. What model car is yours? Also, if you find out what is wrong with it, please post the results. Thanks Last edited by Kaz26; 08-10-2019 at 12:18 AM..
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08-10-2019, 12:57 AM	#13
xjackhunter Private First Class 15 Rep 184 Posts Drives: BMW 335i Join Date: Jan 2019 Location: Georgia iTrader: (0)	Welp... my issue has been solved. I had my rear view mirror harness unplugged due to an issue I was having and apparently that was the cause. I was working on the mirror today and plugged it back in... this immediately solved the problem. Sorry for wasting everyone's time, but I appreciate all of your help. Thanks!
	Appreciate 0 Quote