Question about 1989 Mercedes-Benz 300-Class
Try changing the brake light switch on the top of the brake pedal. If you have checked the hydraulics and checked all the wiring connections to the wheel and axle speed sensors then you need to get the fault codes read. There are only a limited no of analogue codes for the ASD system but might help pinpoint the fault.
Posted on Jul 30, 2010
ASD stands for Automatic Slip Differental, it is like positraction but works differently., it is controlled by a hydraulic pressure circuit off the power steering pump, the system needs to be tested by the dealer to see what the cause of the light is, at this time the system is disabled
Posted on Jul 29, 2010
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
Here's a link to this great service
Posted on Jan 02, 2017
First the sensor in the rear gearbox may be bad or corroded for sensing wheel speed. Also the engine wiring harness may be falling apart. From 1991-1995 the US made MB use biodegradable material on the wiring. When the insulation cracks you get shorts in the system. The same wires are in your EHA on the air inlet area. Check and replace as needed.
Posted on Jun 16, 2009
Tips for a great answer:
Aug 28, 2016 | 1987 Mercedes-Benz 300-Class
Sep 15, 2011 | 1998 Mercedes-Benz E-Class
Feb 15, 2011 | 1984 Mercedes-Benz Mercedes Benz 300 Class
Aug 08, 2010 | 1989 Mercedes-Benz 300-Class
Apr 14, 2010 | 2008 Mercedes-Benz Mercedes Benz C Class
Nov 13, 2009 | Mercedes-Benz ML-Class Cars & Trucks
Jul 01, 2009 | 1993 Mercedes-Benz Mercedes Benz 300 Class
May 26, 2009 | 1994 Mercedes-Benz E-Class
Mar 11, 2009 | 1992 Mercedes-Benz Mercedes Benz 300 Class
Feb 20, 2009 | 1993 Mercedes-Benz Mercedes Benz 300 Class
265 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: