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7 Series - E38 (1995 - 2001)

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  #1  
Old 09-02-2014, 03:40 AM
740lover 740lover is offline
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Location: nz
 
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Mein Auto: bmw e38 740i 95
Exclamation 1995 740i abs light and traction control light wont turn off

Hey everyone
Really hoping there's some one out there who can help out.
Having a serious issue with the abs light and traction control light on my 95 740i. Got the car about six months ago for a really good price but the abs light and asc/dsc light was on . jacked the car up and checked the front wheel sensors as my friend that i brought it from said
they had been playing up a little and thats why the lights were on. sure enough the rubber on both of them was falling apart and there were corroded wires everywhere. ordered two new front sensors, installed them and then took the car to have it coded as the light didn't go away when they went in. codes in the pictures bellow\/
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saw that it had coded for the rear sensors too and my mechanic told me it can take a little bit of driving before abs sensors can start working properly so thought it must of just been the rear causing the lights to stay on. brought two rear brand new abs sensors and put them in with a friend but after we put them in the speedo went :S thought that would sort itself out when i went to reset the codes at the garage. this time i took it to a garage with a better scan tool, one that could get live info from the speed sensors or so they tell me. after leaving it with them for a couple of days they tell me all the sensors are working properly and it the module that's bad and that its wired straight into my abs pump so i need to get a new abs pump, sooo big $$
Are they right or is there something else we are missing that could be a cheaper and easier way to fix it?
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  #2  
Old 09-02-2014, 06:40 PM
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supertech777 supertech777 is offline
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Location: springfield , missouri
 
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Mein Auto: 1995 525i
Just get a good used abs module and have a reputable BMW Indy shop to code it , ours out here in Missouri charges 75 to recode it and an abs module is about 60 bucks used


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  #3  
Old 09-02-2014, 07:25 PM
740lover 740lover is offline
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Quote:
Originally Posted by supertech777 View Post
Just get a good used abs module and have a reputable BMW Indy shop to code it , ours out here in Missouri charges 75 to recode it and an abs module is about 60 bucks used


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Thanks for your reply
Where is the abs module on the 95 740i? My mechanic is saying its wired in a way that he cant remove it from
The pump so i need a whole new abs pump. But i just read last night on another post that the module on the 95 7$0i is actually behind the glove box inside the car and this is why they are less likely to fail with the 95 rather than the later models which have the module straight on the pump exposed to all the heat and vibration? I really need to know cause if my mechanic is wrong, im going to be paying for a new pump when its actually the module behind the glove box that might be bad?
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  #4  
Old 09-02-2014, 09:42 PM
Mayorchuck Mayorchuck is offline
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Mein Auto: '96 740iL
Looks to me like you still have issues with wheel speed sensors. What brand sensors did you buy? Anything other than Siemens or Bosch rarely work on these cars. Seen it time and time again with aftermarket electronics. Also, there is no 'coding' wheel speed sensors. The early E38's do have an ABS module behind the glove box but they rarely fail.

http://www.bimmerboard.com/forums/posts/853273/
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  #5  
Old 09-03-2014, 02:27 PM
740lover 740lover is offline
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Mein Auto: bmw e38 740i 95
Quote:
Originally Posted by Mayorchuck View Post
Looks to me like you still have issues with wheel speed sensors. What brand sensors did you buy? Anything other than Siemens or Bosch rarely work on these cars. Seen it time and time again with aftermarket electronics. Also, there is no 'coding' wheel speed sensors. The early E38's do have an ABS module behind the glove box but they rarely fail.

http://www.bimmerboard.com/forums/posts/853273/
The front sensors i ordered from mpg on ebay
http://www.ebay.com/itm/360328584774...S:1120&vxp=mtr
The rear ones i ordered from aip electronics on ebay too
http://www.ebay.com/itm/171229722378...S:3160&vxp=mtr
so yea both cheap ****ty ones....
Where can i order some good bosch ones?
my mechanic thinks that they are working fine and that its the abs pump, is there anyway to know for sure that its the abs pump that is bad?
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  #6  
Old 09-03-2014, 02:54 PM
Mayorchuck Mayorchuck is offline
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Mein Auto: '96 740iL
Siemens is OEM for those sensors. Cheapest I found was actually on Amazon recently. If your mechanic thinks the aftermarket sensors are ok for this car, he must not have much experience with them. The photos your provide show the diagnostic report pointing to the sensors. Not sure what else to say. Maybe get a second opinion from a good German independent shop.

Google it for yourself 'e38 aftermarket sensors'. Look thru the different forums. Most don't work right out of the box. Some work for awhile and a few have had luck with them.
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  #7  
Old 09-04-2014, 03:08 AM
740lover 740lover is offline
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thanks for all your advice guys doing some work on it atm, will post what ive done and if its worked when its all done
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  #8  
Old 09-04-2014, 03:36 AM
GMCPaul GMCPaul is offline
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Get the SIEMENS VDO sensors and your problem will be solved. About $100-$110ea on average I've found. Then find a new garage that's knows BMW's as your current mechanic is wasting you money on inferior parts due to lack of knowledge on the BMW's requirements. Then enjoy the car. My Best Paul
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  #9  
Old 09-24-2014, 02:31 AM
740lover 740lover is offline
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Location: nz
 
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Thanks for all the advise guys. got some good speed sensors from a bmw specialist and thats fix the problem altogether. will know to go with the genuine parts for this car in future. end of story dont buy cheap ebay parts for your bmw.....
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