Welcome to Bimmerfest -- The #1 Online Community for BMW related information! Please enjoy the discussion forums below and share your experiences with the 200,000 current, new and past BMW owners. The forums are broken out by car model and into other special interest sections such as BMW European Delivery and a special forum to voice your questions to the many BMW dealers on the site to assist our members!

Please follow the links below to help get you started!

Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > M Series > E46 M3 (2001-2006)

E46 M3 (2001-2006)

Reply
 
Thread Tools Display Modes
  #1  
Old 01-07-2007, 02:25 PM
2002 BMW ///M3 2002 BMW ///M3 is offline
Registered User
Location: USA
 
Join Date: Jan 2007
Posts: 15
Mein Auto: 2002 BMW ///M3
2002 M3 Key Issues

I recently bought a 2002 M3, and got 2 remote keys with the car. they both lock and unlock the doors ect, but only 1 will start the car continuously. if i start the car with the "good" key, and turn it off, and put the "bad" key in, it starts, but if i turn it off, and try to restart it with the "bad" key, it wont work. whats going on???
Reply With Quote
Ads by Google
  #2  
Old 01-07-2007, 04:50 PM
bren's Avatar
bren bren is offline
///Mpty pockets
Location: MD
 
Join Date: Jul 2002
Posts: 1,963
Mein Auto: wankermatic
Have you tried driving around for a while while using the "bad" key?
Reply With Quote
  #3  
Old 01-07-2007, 06:54 PM
2002 BMW ///M3 2002 BMW ///M3 is offline
Registered User
Location: USA
 
Join Date: Jan 2007
Posts: 15
Mein Auto: 2002 BMW ///M3
i drove around for about 30 min but that didnt help. maybe i should drive longer??
Reply With Quote
  #4  
Old 01-08-2007, 05:57 AM
bren's Avatar
bren bren is offline
///Mpty pockets
Location: MD
 
Join Date: Jul 2002
Posts: 1,963
Mein Auto: wankermatic
The keys contain a battery, I was thinking maybe it wasn't charged. I suppose the battery could have gone bad. This doesn't explain the sometimes starting though.
Reply With Quote
  #5  
Old 01-08-2007, 09:43 AM
dawgbone dawgbone is offline
Officially Welcomed to the 'Fest
Location: North America
 
Join Date: Nov 2004
Posts: 316
Mein Auto: 05 BMW M3
does the key pass an electronic code to the security system(ECU)?

it could be alot like a CMOS battery of a pc....where it has to have 5 volts to keep stored settings in memory when the PC is turned off...
Reply With Quote
  #6  
Old 01-08-2007, 11:11 AM
bren's Avatar
bren bren is offline
///Mpty pockets
Location: MD
 
Join Date: Jul 2002
Posts: 1,963
Mein Auto: wankermatic
Quote:
Originally Posted by dawgbone View Post
does the key pass an electronic code to the security system(ECU)?

it could be alot like a CMOS battery of a pc....where it has to have 5 volts to keep stored settings in memory when the PC is turned off...
AFAIK, that is correct.
Reply With Quote
Reply

Bookmarks


Forum Navigation
Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > M Series > E46 M3 (2001-2006)
Today's Posts Search
Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On



Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS: 2002 E46 BMW M3 Silver on Imola...Rare. Only 28k miles. Priced to sell!! paul-hb Cars - Private Party 0 07-18-2006 07:28 AM
E39 Dimond Key Thread tkruger206 E39 (1997 - 2003) 4 07-07-2006 10:01 AM
FS: 2002 Laguna seca Blue m3 M3thanh Cars - Private Party 0 06-27-2006 08:53 AM
2002 E39 530i audio upgrade issues mkosma Car Navigation, Audio & Electronics sponsored by BimmerTech 22 04-24-2006 09:23 AM
2002 M3 Gtr geomax General BMW 22 01-02-2002 11:22 PM


All times are GMT -7. The time now is 11:41 PM.


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