ASC light

[DonovanPorter]

my ASC light came on while sitting in the traffic this morning , when switched off and started again it was fine , any ideas?

 

[DonovanPorter]

i cleaned the wheel sensors but now its on permanantly ?

 

[Hellas]

Go for a drive and see if the car resets the light itself.

 

[DonovanPorter]

its been on for 2 days now

 

[Hellas]

:thinking: You sure all the wires is back in and connected? I know that after I changed the brakepad sensors, the light cleared by itself.

 

[DonovanPorter]

i just removed them cleaned them good and put them back , ill check if anything came loos but i doubt it

 

[DonovanPorter]

ok so BMW want to charge me 4 hours labour to check the car that amounts to R2500-00 just to check , so ja ill keep checking and see what i come up with

 

[Jandre]

Could it be that the car registered a possible tamper? Disconnect the battery for 15 odd minutes, reconnect and see if that makes a difference.

 

[DonovanPorter]

iam going to check all sensors tonight clean them again my be some muck got on to the little stip on the front of one of them , and ill try all the above , nabe we will be in luck will keep you posted

 

[NoFear]

plz do keep us posted I have the same problem here, even BMW could not fix it changed sensor everthing and nothing :mmm:

 

[DonovanPorter]

my main concern is , what effect does it have on the car over a period of time , and what could go wrong with the car in the time that the light is on ?

 

[NoFear]

My mistake was thinking of something else.
Here's what I could find.

First, try a complete vehicle fault code clearing. If this does not help, re-boot the ASC module by disconnecting your battery or the cable connector to the ASC for approximately 20 minutes. Actually, you can do both simultaneously.
If the ASC light still comes back, then it needs coding no matter what others say. Then clear fault codes again.

 

[DonovanPorter]

i will try that aswell thanks

 

[BimmerMan]

I know the E39 and E39 suffer from this (not sure about the E46), but it could be the ABS/ASC module that sits in the engine compartment. They show up under diagnostics as a faulty wheel sensor but in actual fact, it is the module that is failing...

 

[DonovanPorter]

i checked and cleaned all the wheel sensors again , i did not use any solvents i did not want to mabe cause a problem , i used a soft cloth and cleaned them good, while i done this i had the battery disconected , i unplugged them and and checked all connections are dry and clean , the light is still on , i did notice the front left sensor looks as if it has been rubing against something , it has definate scrape marks along the one side , iam thinking that that could be a problem .

 

[Hellas]

:thinker:

 

[SirSparky]

i had the same problem on my e36 the light would come on and then go off again.check your relays....that worked for me

 

[DonovanPorter]

shot ill check them , thanks

 

[mohy]

shot ill check them , thanks

Hi
Did you manage to sort it out? I have the same issueon my e39 525 2001 ...now the speedo, cruise control, abs have all failed. it happened gradually,one failure after another took place. the agents say its the hydro control unit R15k to replace

 

[DonovanPorter]

i replaced the TPS all is well , have your car checked with the diagnostic cjecker then you should get an error code