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BMW 7-Series Maintenance and Repair

750 messages,  Last post on Dec 01, 2009 at 10:55 AM

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What is this discussion about? BMW 7 Series, Electrical, Engine, Sedan

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#1 of 750 Unable to unlock the 740 trunk by czma Oct 29, 2003 (2:25 pm)
Hello All:   I was out for half year, and I dis-connect the battery for my 97 740il. I came back over the weekend, and I was able to start the car after I put the battery back on.   Here is the problem: at the early begining, I couldn't lock/unlock the car/truck by using the car key. So that I have to do it manually. And then two days later, all a sudden, it works fine! I can lock/unlock the car by using the car key.   And now I still have another problem on the trunk. If I want to unlock the trunk, then I have to RE-LOCK the car again, and use the key to unlock the trunk manually. I remember back to the old days, if the car doors were unlock, then I can go ahead to push the trunk key-hole, and the trunk will be unlocked.   Does anyone know how to fix it? I called dealer, and they said it will cost me $79.99 to reset. And this is too pricy. Thank you in advance. Replies to this message: akamam740il (Feb 11, 2008 8:18 am) polljimmy (Jul 20, 2009 2:18 am)
#2 of 750 by f1buick Oct 31, 2003 (10:28 am)
you didn't say what year your car is. makes a BIG difference.   you could try your own "reset" by disconnecting the battery negative ground cable for about 30 minutes. seems like you cpu is confused and stuck in some sort of software anomoly. before doing this, make sure all of your physical systems are as close as possible to the same position, i.e., the locks all are unlocked. hopefully, when you reconnect the cpu will reset itself with all physical systems "synced". Replies to this message: jbuchanan (Aug 30, 2005 4:38 pm)
#3 of 750 make sure you have your radio codes written down by swschrad Oct 31, 2003 (9:17 pm)
unless you like paying the dealer to unlock the radios.
#4 of 750 How should I "reset" the computer? by czma Nov 04, 2003 (9:32 am)
f1buick/swschad,   My radio is OK. I just don't know how can I reset the computer. Can you give me some more directions? Thanks!
#5 of 750 How to re-attach body color outside mirror cover by lloyd7196 Nov 08, 2003 (8:54 pm)
Only a month after leasing a 2001 740il, with only 14,000 miles, went thru carwash and front body colored outside mirror cover came off, all 4 tabs inside seemed ok, so just hooked back in and still a little loose, is there an epoxy that should be used to keep cover from being so loose? welcome any ideas for help,   Second question, notice black weatherstripping inside front right door was painted with must have been door area, rubber is black on left side (painting is also on same side mirror cover came off), some body painting was done, job is perfect, dealer knows nothing, nothing showed up on Carfax, is ther another way to find out history of 740, and if details of work done? BMW Corp. said I can go to original dealer, but not sure if any record, anyway to find out exactly what work was done?
#7 of 750 by Mr_Shiftright HOST Nov 24, 2003 (3:49 am)
Carfax won't show fender-bender type damage, only if the car was totalled. It might have been shipping damage. Most states allow dealers to repair minor damage to new cars without telling the customer. I think it's around $499 or less in California at any rate.   As for the mirror, don't do anything so permanent as epoxy. Perhaps a silicone that sets up would be better.
#8 of 750 Air Bag light stays on. by mge Dec 07, 2003 (9:53 am)
I just bought a 1999 740i. I think I may have done something to the computer because I turned off the engine and tried to remove the key and turn the key before realizing that I had not put the car in park. Now when I start the car The air light come on goes off and then comes back on and stays on. According to the manual this means there is a malfunction un the system. Can I try to reset the system by disconnecting the battery. I have the navigation system so by disconnecting the battery will this cause more problems with the system.
#9 of 750 Take it in by tlcman Jan 19, 2004 (5:37 pm)
I have a 2000 740 iL with the navigation system, Countless times I have been careless in pulling it into my garage and push the shifter up from 4th not drive, into N or reverse, if i put it in N i usually catch my self. But when I put it in R, and shut my car off, then realize that its not in park. I turn the key to the on position not starting the car and shift into park. Disconnecting the battery in any BMW is a very hairy situation, first of all you hard boot the computer and erase the code, so you have to re-enter it upon startup (well at least on my last few bmers) this is a anti-theft device installed by bmw. If you have not disconnected your battery STOP!!! do NOT disconnect it, it will be a nightmare most likely, The best that I can say since im not a BMW mechanic is take it to you local BMW service department, have them look at it. Or call them which ever works Hope this helps.
#10 of 750 by nvbanker Jan 20, 2004 (3:38 pm)
Wow......This is way too tempermental for me.

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