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Old 09-26-2001, 11:44 AM
stevebfl stevebfl is offline
Join Date: Mar 2000
Location: Gainesville FL
Posts: 6,844
The fuel pump relay on a C280 does not have any decision making capabilities. It is a dumb relay that has its decisions made by the HFM controller.

You should check for fault codes in the HFM and EA/CC/ISC modules.
Steve Brotherton
Continental Imports
Gainesville FL
Bosch Master, ASE Master, L1
33 years MB technician
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