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MB Paul
MB Paul, Mercedes Technician
Category: Mercedes
Satisfied Customers: 4317
Experience:  Mercedes Benz Qualified Diagnostic Technician
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MB CL 500 Yr 2000. The ABC light has been coming on more often

Customer Question

MB CL 500 Yr 2000. The ABC light has been coming on more often and is on red most times. The Dealer says probably need 4 new shock absorbers @ £1,000 each. As car only cost a bit more surely there could be some other answer. I saw, somewhere, it could be a pipe near the catalytic converter? Any thoughts?

Thanks, David.
Submitted: 4 years ago.
Category: Mercedes
Expert:  MB Paul replied 4 years ago.
Hi David,

There are several possibilities for ABC system faults - the car should be checked on a diagnostic tool for fault codes and the system checked for leaks - common problems are low pressure faults caused by leaks or a failing pump.

Any leaks in the system should be identified & repaired first.

The ABC struts (shock absorbers) are prone to leaking - although it is unusual for all 4 to be leaking & need replacing all at the same time I have seen it on rare occasions.

Leaks from pipes in the system, valve blocks or the pump are also common points of failure.

If your dealer has said all 4 struts need replacing then I would ask them to explain why and ask to inspect them yourself.

If all 4 struts are leaking then they will need to be replaced I'm afraid.

Best regards, Paul
MB Paul and other Mercedes Specialists are ready to help you
Customer: replied 4 years ago.

Hi Paul,


Thats great and I am wary about going to a Dealer so any idea where else I could go?


 


Regards,


 


David.


 

Expert:  MB Paul replied 4 years ago.
Hi David,

Working on the ABC system requires the use of specialist equipment so I would recommend either a dealer or to try to find a local Mercedes specialist with Mercedes STAR diagnostic tool.

Following repairs on the system the vehicle needs to be bled out & flushed through using Mercedes STAR

Best regards, Paul
Customer: replied 4 years ago.

Thanks and will do. David.

Expert:  MB Paul replied 4 years ago.
youre welcome

I hope all goes well & let me know if you need anything else.

Best regards, Paul