Hi i have a 1988 190E 2.5 16v Cosworth ( UK MODEL)
The ASD light is lit, i have been told my diff may be at fault, but only noticed the light come on sometime after jetting the engine bay.
On close inspection it seems i may have got water in the ASD unit, (OOPS!)
Is there any way of finding out what is causing the fault, or a simple test for the ASD unit

Thanks for you time
Gavin[/size]

 

scan for the fault code.

 

How do i do that?

Thanks sleepwalker

 

some repair shop got those scanners. it will tell you directly the problem.

 

Take it only mercedes benz dealerships will have the right equipment?
What if my diff is faulty? how can you tell?

 

the differential can never get faulty, except for those little clutches on the side which can wear out in time.

check the speed sensor for resistance.