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E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #1  
Old 04-24-2013, 12:34 AM
leisureman22 leisureman22 is offline
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Mein Auto: BMW 535i
EGS Transmission control unit

Hello everyone - I am a newbie and this is my first message. I am reliably informed that I need a replacement EGS for my 1999 E39 535i auto as I am getting 'trans failsafe' on the readout. Also, I get warning lights for brake, ABS, check rear lights. My car has done 160,000 trouble free mileage.
My local BMW agent said that to exchange this would cost more than the car is worth.
Can anyone advise me - if I am doing the right thing or/and - a. Where I can find a recon. unit? b. Is it a DIY job? If so, could someone tell me detailed instruction of how to replace it and c. What is the Part number of this unit for my car. The VIN number is WBADN22010GE68418.
I am currently in south of France & still driving the car (carefully!)
Any advice would be gratefully received.
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  #2  
Old 04-24-2013, 03:57 AM
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diggyd357 diggyd357 is offline
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Are there any symptoms to go along with the trifecta lights ? As covered here many times, there are several causes for this 3 lights to be lit at the same time and many of which are not real expensive or difficult to repair. I'd DEFINITELY run it across the forum members here before taking the word of a dealer mechanic. Not that they're not capable, but they're there to make as much money in the shortest time. So something that may be cheap to fix, but take time to diagnose is not their forte.

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Old 04-24-2013, 05:18 AM
HTK12 HTK12 is offline
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What? More than the value of the car? Was it a BMW dealer? I call that total BS. In any case you got the trifecta, so the issue is with the ABS module not the EGS. Besides replacing EGS wouldn't be even third of the value of the car even, if it was done at the dealer.. This is definately DIY stuff. To solve this issue read this http://www.bimmerfest.com/forums/sho...1&postcount=48 . That post covers everything you need to know to fix your issue. The cost of fixing this issue will run you ~80-500, depending what the issue is.
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Old 04-24-2013, 05:21 AM
leisureman22 leisureman22 is offline
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EGS Transmission module

Hi - thanks for your suggestion. I'm fairly confident that the EGS is the problem, as it does affect the rear lights, ABS etc also the radio intermittently.
Does anyone have experience in changing the EGS and how to do so?
Callum
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Old 04-24-2013, 05:28 AM
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mjalloul11 mjalloul11 is offline
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The EGS is in the engine compartment next to the engine control unit it will come out easy. but you have to program the new unit to your car, even a used one.
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Old 04-24-2013, 05:36 AM
HTK12 HTK12 is offline
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Quote:
Originally Posted by leisureman22 View Post
Hi - thanks for your suggestion. I'm fairly confident that the EGS is the problem, as it does affect the rear lights, ABS etc also the radio intermittently.
Does anyone have experience in changing the EGS and how to do so?
Callum
How did you determine the EGS is the issue? The ABS and brake lights are caused by the ABS unit/wheel speed sensors. When you got ABS module/sensor issues you get trans failsafe program. Warning about rear brake lights isin't caused by the EGS, they are caused by the LCM, which monitors all lights and gives you warnings about them. I've replaced and coded modules on BMW, but before throwing parts at it you need to diagnose the issue. If you got too much money then go ahead and start throwing random parts at it.

Since you got a lot of electrical issues start by checking the alternator and battery first. Either one of those can cause trans fail safe. I had trans fail safe due to failing battery.

Last edited by HTK12; 04-24-2013 at 05:38 AM.
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Old 04-24-2013, 06:07 AM
leisureman22 leisureman22 is offline
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EGS Trans failsafe prog

It was diagnosed by a BMW expert in USA, having given him all info. I have also been given diagnoses - ABS, wheel sensors, EGS need programming & another said it was interchangeable! I don't know who to believe, now!!
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Old 04-24-2013, 06:09 AM
HTK12 HTK12 is offline
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So the expert diagnosed the issue without ever seeing the car?
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Old 04-24-2013, 06:19 AM
leisureman22 leisureman22 is offline
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Egs

Yes - of course, as I am based in France! Having explained the situation in detail, I need a definitive answer; what I am getting is a number of differing opinions.

I took the car into a BMW dealer who told me that there was a problem with the EMS and it woulld take possibly 2 days to fix @ 90 per hour! More than the car is worth!
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Old 04-24-2013, 07:20 AM
HTK12 HTK12 is offline
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How do you remotely diagnose the issues is beyond me. As I said start by having the battery & alternator tested. Usually car parts stores/battery specialist stores offer this service for free. If you can't find this kind of service, then check them yourself. You'll need a multimeter. Check the voltage at idle, at 1000 rpm and in the morning before starting the car. These voltages will tell you if there is an issue with either alternator or battery. If you don't find any issue with those the next step would be checking the OBD codes and doing the diode test on the wheel speed sensors. The link that is in my first post (http://www.bimmerfest.com/forums/sho...1&postcount=48 ) tells you how to do that test. That test will tell you is the issue is with wheel speed sensor(s) or the ABS module. Once you got the ABS issue sorted most likely the trans failsafe program will also be gone. This is well documented on this forum. If you want to DIY this forum has all the information on diagnosing & fixing the issue.
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Old 04-24-2013, 07:28 AM
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doru doru is offline
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I would be careful here. Leisureman22, go to a reputable BMW independent mechanic or BMW dealership in France, and hook up the GT1 to read the codes. Go from there. Once you have the codes read, try to remember the correct sequence of events of the car's misbehavior, then start crossing the t's and dot the i's.
This is NOT an issue to diagnose over the net, especially if don't have the codes read. As an example: the rear lights not working could be totally coincidental and a different issue altogether.

Bonne chance mon ami.
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