Kenny69
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Hi Dave I've just joined the forum today and only came across it by chance. I saw a post that someone posted and i saw your reply and the vast knowledge you have. My 2005 e53 has some strange things going on and i have been trying to get to the bottom of it for sometime now and up to date has cost around £1,300 so far. The problems I'm having is intermittent more not working than working. When in fault as i call it ive no indicator warning, no high beam light warning (blue light on dash) no volume control from the steering wheel and sometimes when i switch off the car the brake lights stay on. to get these to go out i turn on and off the ignition quickly. Also i have no PDC and no seat belt warning as well.
I have had the car into the dealers for a new LCM supplied, fitted and programed and i have changed the ignition switch but the fault remains. This car has only done 95,000 miles and drives like new but I'm at my whits end with it now is they're any advice on what to try next ? Oh i have no drain on the battery as the car is going to sleep but i have not checked the battery condition.
Kenny
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Morning Kenny
Welcome to the Forum
My normal reaction would be the LCM/FCM module I have seen a few of them over the years, however as you are still experiencing the issues after the Dealer changing the LCM a couple of questions.
1. What does the Dealer think is going on? After all they changed the LCM.
2. Has the Dealer or you run a diagnostic while the Fault is present? What other control units are greyed out? It is possible that what is seen as a "Fault" is a symptom caused by an issue with a neighbouring control unit hence what else isn't talking to the Diagnostics
Do you have any diagnostic equipment? For the E53 the best and easiest to use is BMW 1.4.0 the program and OBD lead will cost around £25 best is to load it onto an old laptop Win 7 or 8 so even if you brought one from Ebay total cost would be £80 or so. For your investment you will have Dealer level access, diagnostics and programming.
Now to your problem, BMW love using common earth points and earth switching, close to your LCM you will find an earth comb check very carefully for any signs of condensation/water ingress in the area around the LCM and the earth point it doesn't take much to cause poor continuity. I bet the Dealer just unplugged the LCM and fitted the new one. I would take off the earth point clean it and all the earth tags with a good contact cleaner refit the earth comb using contact paste and refit all the earth connections see if it makes a difference as it costs very little just your time. If you look at www.realoem.com (if you aren't aware) put the last 7 digits of your Vin into the search box it will bring up your model, then check the sections you need. The small, exploded drawings will help where stuff is and how it fits.
Good Luck Enjoy your X5
Dave
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Hi Dave, thank you very much for your reply. Yes the dealer just changed the LCM but said they had to disconnect the upgraded audio I had professionally installed in order to communicate with the car to program in the LCM. What you said to clean the connections and grease the earth combs down where the LCM is located was my next move and hopefully this should do it. I’m also going to invest in the program and OBD lead as we have 3 BMW’s in our household.
Thanks again
Kenny
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When I changed my own LCM a few years back the 4.6is had a MkIII Lcm which I took the opportunity to upgrade to an LCM 4 (more Functions) The original died following a Windscreen change (fitted badly) that leaked.
BMW will tell you that you can't fit a used LCM which is rubbish it took me longer to remove and fit the replacement LCM (about 45mins) than to check and reprogram the one I brought from Quarry Motors (10 mins)
BMW 1.4.0 will be OK with all BMW;s (apart from Mini) up to 2005/2006 if you need any help with anything just shout
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