ECM /MAS defect on 2001 'A' Class - Mercedes-Benz Forum

 
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post #1 of 2 (permalink) Old 10-31-2005, 03:02 PM Thread Starter
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Date registered: Oct 2004
Vehicle: A160 W168 /2002
Location: UK South coast
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ECM /MAS defect on 2001 'A' Class

What a disappointment this car is, noisy on the road along with other defects that should have been subject of a recall, Now more trouble this time on my own car.at 31800 miles on the clock.
Car stalls, restarts but engine management light illuminates on dash display exhaust fumes indicate the car is running very rich. Initial diagnostic test by Mobilolife points to oxygen sensor in catalytic converter, replaced at a cost of £150.00 fault does not clear, 2 further pointers to mass air sensor problems which on this model is integrated with the Engine Control Module a further cost of just on £900.00 this item is on order and takes about 5 days to reach the UK in the meantime the car is running fine having apparently overcome the problem, although the fault lamp is still displayed on the dash display, If your car suffers this problem the mass air sensor can be repaired by http://www.bba-reman.of the UK for £250.00 with a 2 year warrantee. Ironic that a new unit from Mercedes-Benz is only covered for a year. Note however that they do not repair the ECM part of the combined module The 'A' Class may have a large interior but from what I can see you its needed to carry the large purse that’s required to run it. Good will from Mercedes Nil, Car serviced from New by main dealer. How sad, because I love the car.
http://homepage.ntlworld.com/albert.rowe
My email address in posted on my homepage if Mercedes-Benz would like to get in touch
lofty
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post #2 of 2 (permalink) Old 11-02-2005, 08:30 AM
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Date registered: Oct 2005
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RE: ECM /MAS defect on 2001 'A' Class

thats a bad experience with your A class. sorry to hear that. but have you tried removing the battery? this sometimes eliminate the CEL permanently or temporarily. your problem could also be a cause of coolant temperature sensor, fuel injectors and injection timing, unmetered air.
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