Bimmerfest - BMW Forums

Bimmerfest - BMW Forums (http://www.bimmerfest.com/forums/index.php)
-   E46 (1999 - 2006) (http://www.bimmerfest.com/forums/forumdisplay.php?f=98)
-   -   Remote Key Won't Work (http://www.bimmerfest.com/forums/showthread.php?t=95299)

yanluwhoa 04-21-2005 06:58 AM

Remote Key Won't Work
 
2 days ago, both my remote keys for 2000 328i suddenly stopped working. Car does not respond when I press lock/unlock/unlock trunk botton on the remote key, but I can still lock/unlock door and start ignition with the physical metal lock.

I've checked/tried the following:
1. location/inteference: problem is not location specific as remote not working in several locations.
2. fuse: no fuse blown.
3. reprogramming: turn on engine, turn off engine, press and hold "unlock botton" while press "lock" botton 3 times. Key does not get reprogrammed.

What do you think I should do next? Thanks in advance!

Alex Baumann 04-21-2005 07:05 AM

It could be the key battery.

JST 04-21-2005 07:36 AM

Quote:

Originally Posted by Alex Baumann
It could be the key battery.


Seems unlikely that both would fail simultaneously.

The fact that neither key works certainly makes it sound like a problem with the car itself.

bitmouse 05-13-2005 01:09 PM

Did you ever figure out what the problem was?

I'm having a similar problem, except I have to get real close to the car for remote key to work. This is with both keys.

icemanjs4 05-14-2005 12:26 AM

I've got a different problem. Sometimes I can use the remote to open one door. Then I can't get it to open any other doors, even the unlock button inside the car wont work. Here's the typical sequence of events. Maybe it's a safety feature?

1) I hit unlock (and unlock drivers door only)
2) I get in the car only to realize I forgot to unlock the passenger doors.
3) I hit the remote a billion and a half times - nothing happens
4) I hit the unlock button the car - nothign happens
5) I double pull the passenger door to let them in

This doesn't happen frequently - but it's annoying and embarrassing when it does happen.
Anone else seen this behavior?

ZIGGURAT89 05-14-2005 05:20 AM

You have to go to the dealer and have them reprogram your keys. Same thing happened to my car last year, make sure you bring in all the keys.

bitmouse 05-15-2005 06:29 AM

I have a feeling that the car is not receiving the key's signal. Mine still work, but I need to get close.

I'm guessing that either the keys are not properly recharging or the antenna amplifier needs to be replaced.

540i bah 08-01-2007 06:17 AM

anteanna location
 
Quote:

Originally Posted by bitmouse (Post 1192189)
I have a feeling that the car is not receiving the key's signal. Mine still work, but I need to get close.

I'm guessing that either the keys are not properly recharging or the antenna amplifier needs to be replaced.

ok, my car is having the same issue, i'd put money on it being the antenna but how can i test that and where is the antenna?

thanks,

b

sierrakilo99 08-01-2007 07:17 AM

There are two antenna. The rear window defogger array acts as the radio and remote antenna for the keys. There is also a 'ring antenna' around where the key actually inserts into the ignition.

tturedraider 08-01-2007 11:46 AM

Quote:

Originally Posted by sierrakilo99 (Post 2544798)
There are two antenna. The rear window defogger array acts as the radio and remote antenna for the keys. There is also a 'ring antenna' around where the key actually inserts into the ignition.

Actually, the radio antenna is separate from the defogger. They are both imprinted on the back window, but do not use the same wires. If you look at the top of the back window you can see the radio antenna wires distinct from the defogger wires.

smolck 08-01-2007 06:49 PM

I had similar problems and it was indeed the battery for the key. $2 at target and I can unlock or lock my car from 100 yards! (I might be exaggerating just a bit but it has some range)

Heidi 09-08-2009 06:24 AM

I have a BMW 318i 2003 model. The EML light comes on now and then, this cause the car to reduce its power/speed (allowes nothing more than 40km/h). This normal happens in the summer when its wet & raining or when I have the car washed with a high pressure washer. It doesn't happen immediately after the wash, it takes moreless 2 days. I have taken the car to BMW to see whats wrong, they replaced something (can't remember now what it was) but I still have the same problem?

greenflower 04-18-2010 01:32 AM

thanks ziggurat89!
 
Quote:

Originally Posted by ZIGGURAT89 (Post 1191573)
You have to go to the dealer and have them reprogram your keys. Same thing happened to my car last year, make sure you bring in all the keys.

Thank you, i had same problem, nothing would start, unlock, or radio come on at all. I just posted this issue about 1 hour ago on this website, only to find your answer later.

Im going to the dealer tomorrow. I will let you guys know what happened!

So i think its either:

1) i need to go to the dealer to reprogram key

2) the batter in the key died.

jamescurt 04-18-2010 10:32 AM

bitmouse problem will be the batterys in both keys if you have to get close to the car mine did that then wouldnt work at all.

TechGuy 04-19-2010 05:07 AM

I once had a similar issue in an E46. Firstly guys, the diversity module or the receiving antenna is bolted onto the passenger side c pillar to get to which you should remove the trim. Now, this car was very interesting. It had a key which had gone to lunch and another which had a dead battery. You cannot replace the battery as you probably know, but rather will have to keep the key in the egnition whilst you have the ignition ON or perhaps driving. I drove that car with the second key which looked absolutely unmarked and after about 15 KM driving I had that key alive and working. Remember it takes 30 hours for a dead battery to fully charge up so if you happen to find out that the battery is flat, you'd better make the switch to that very key.

But of course this is only one way of looking at the issue and a failing antenna is possible but an antenna suddenly dying? It may be due to a leaking seal around the rear glass letting water to sneak through as the result of which the antenna giving up.

CUZ2BME 05-20-2010 09:23 AM

Remote Key
 
First I want to say hello to you all. I am New here but not new to BMW. I ahve a 04 745Li and 03 Z4 both very nice cars. I have two small problems. The 04 have a spare remote key which doesn't work because when I purchase the car. The dealer inform my that he couldn't get the key to work, so I went to the BMW dealer and were told that the key would program itself. But what I had to do were place the remote key in the key slot and hold it there,until the it were recognized. Oh the car responded with wrong key.. So after check around I purchase another key,however it is the wrong key as well.. So for everyone information there are two different key remotes ( maybe even more but I know of two). The FCCID LX8766S will be on both Key Remotes, but the Manufacturer Part Number: BMW 6 959 044-01 is for the 750/760 series and The Manufacturer Part Number: BMW 6 936 573 is for 745 series. Now with that said to anyone has or know where I can find the one I need BMW6 936 573?

Thanks and I hope this help someone....

SFBarber 05-29-2010 12:36 PM

I know the answer to the problem
 
I have noticed that when the engine has been running a lot or it is hot out the key will not work. this rules out any other answers (antenna, battery etc.) because sometimes it works perfectly. i talked to another blogger and he had found the reason is on the circuit board there is a bad resistor that he offers to fix. if you live in the greater LA area he will help you fix it. he is a electrical engineer at JPL so i trust him. Grew up next to JPL and know that those people are smart. the prob is ive lost his feed. looking for it now but its very old like a year. look for it and find the answer, report back.

catso 05-29-2010 02:37 PM

Quote:

Originally Posted by SFBarber (Post 5221098)
I have noticed that when the engine has been running a lot or it is hot out the key will not work. this rules out any other answers (antenna, battery etc.) because sometimes it works perfectly. i talked to another blogger and he had found the reason is on the circuit board there is a bad resistor that he offers to fix. if you live in the greater LA area he will help you fix it. he is a electrical engineer at JPL so i trust him. Grew up next to JPL and know that those people are smart. the prob is ive lost his feed. looking for it now but its very old like a year. look for it and find the answer, report back.

Are you referring to Scott Johnson? :thumbup:

jcourcoul 05-29-2010 03:24 PM

Is this for real, or just another urban myth?

sarabs 03-29-2012 05:53 AM

remote keys only work when close to car
 
Quote:

Originally Posted by bitmouse (Post 1191088)
Did you ever figure out what the problem was?

I'm having a similar problem, except I have to get real close to the car for remote key to work. This is with both keys.


I am having a very similar problem from last week. Both the keys exhibit the same behaviour hence I doubt it is key battery problem.

I need to stand real close to the car and that too side ways (near doors) to get the remote key to work. I can't get it to work from distance or even from the front of the car.

Didn't have this problem before and now I can see it with both keys. The keys have rechargeable battery and I have driven with both keys now but no joy.

Any clues?

2003BMW325XI 04-13-2012 05:50 PM

i have an intermittent non-responsive door lock problem. Only the driver door would unlock and wouldn't do anything else so i got in to check the fuse and the door locked while i was checking the fuses and then there was no response from anything!

the interior unlock button wouldn't work and i was stuck in my car until i rolled the window down and manually unlocked it. So in my case im thinking there is a problem with the lock module.

Problems has gone for now but i'm sure it'll return

check the module and let us know....sorry i can't tell you where it is

rgk330i 04-13-2012 06:13 PM

The module is above/behind the glove box. It's not hard to remove, but it's a delicate job to replace the relays. I did it a few weeks ago, but you ought to be pretty comfortable desoldering small components, or forget it.

There's a guy in CA who offers repairs, see www.bmwgm5.com.


Sent from my DROIDX using Bimmer App

2003BMW325XI 04-13-2012 08:31 PM

thanks... any more incidents and i'm doing it

z168 09-18-2012 07:53 AM

Im now having this problem. All 3 cars wont respond to their remotes this morning. What the hell could that be?!?

z168 09-18-2012 07:58 AM

I just found this out. The cars respond to the remote outside my garage. Once the cars are inside, they wont. Wth?!?


All times are GMT -7. The time now is 02:44 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
© 2001-2011 performanceIX, Inc. All Rights Reserved .: guidelines .:. privacy .:. terms