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BAS/ESP light and wheel locks

977 views 4 replies 2 participants last post by  dramos 
#1 ·
Hello Benz community.

Yesterday i had a dangerous situation ended by turning up BAS/ESP light and now i have this same case after every engine start:

+/- one minute after engine start wheel locks on half second and BAS/ESP light turns on. It's dangerous situation because i have this independently of the speed. I don't know witch wheel locks.

What could be the reason of this? Broken sensor or something more important?

Thanks!

D.

PS. Sory for my english ;/
 
#3 ·
I think what applies to my ML320 will also apply here. Many things can cause your symptom. Usually it's a defective yaw rate sensor but could be defective wheel speed sensor, lateral acceleration sensor, Esp controller etc. What you should do first is to get the car scanned with a pro level scanner, print out the results, take it for a long drive. Then go back for a rescan when the symptom appears again. This way we will differentiate old stored codes from actual error codes. Good luck.
 
#4 ·
I have errors codes from BAS/ESP:

BAS:
P201E - Terminal 87, exceeded voltage

ESP:
C1010 - Terminal 87, too low voltage
C1012 - Terminal 87, exceeded voltage
C1100 - Front left wheel sensor, open circuit
C1102 - Back left wheel speed sensor, connection lost
C1103 - Back right wheel sensor, incorrect signal

Propably this Terminal 87 is broken but I need to find what's that. Maybe someone know what can be wrong?
 
#5 ·
You may have a bad ground somewhere as per that terminal 87. Also are your battery and charging system good? I suggest you clear codes, clean all wheel speed sensors and replace any broken one, ensure your battery and charging system are optimal, check for any bad ground, drive your car and rescan if symptoms reappear. Let us know how it goes.
 
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