2005 Mercedes-Benz C240 4MATIC Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2005 Mercedes-Benz C240 4MATIC
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2005 Mercedes-Benz C240 4MATIC ProblemsDead Battery Due to Failed Seat Control Module
A dead battery can be caused by a faulty seat control module that does not properly shut down. Spilling liquids on the front seats can cause these modules to fail.
The SRS (airbag) light can come on if liquids are spilled into the seat belt buckles, or if the liquid pools underneath the seat and gets into the electrical connector for the seat belt pretensioner. Damaged components will require replacement to restore proper airbag operation.
The heating, ventilation and AC (HVAC) heater box is susceptible to mildew buildup. This can result in a musty odor from the HVAC system, most noticeable when the system is first turned on.
2005 Mercedes-Benz C240 4MATIC Questionswhy has my auto trans stopped shifting- Mercedes Benz says it is a problem (1 answer)
leak of ATF / control module
It makes the sound for 59 times just like the seat belt indicator and does it in unision with the seat belt beeps. If you turn on the heater it gets louder.