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2005 Mercedes-Benz C240 Questions

Get answers to questions about your 2005 Mercedes-Benz C240 at RepairPal. Find solutions, diagnose problems and get back on the road.

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25
questions

The turn signal won't work either ...takes 2 sec and it's back to normal it happens sometimes numerous times - or only once ...help:(

It happens each time I drive the car but when I stop and pack for like 20 - 30mins it picks again and after some time it won't accelerate again till I pull over again.

It happens on straight roads and very regularly

start new alternator battery is charged still getting check alternator battery

As if it had feathered tire tread on in and out sides but they are not

I get the turn signal flashing on the dash but not lights come on?

all the time.

Reconnected. Since then, warning light has come on a few times. This has never happened prior to disconnection. What else could have been effected? Thank you

how to replace the cold start valve

For 6 months has occasionally threatened to stall, with onset of colder weather would not start readily, holding accelerator halfway down seemed to help. Check engine light came on once 4 months ago and logged code that air mass sensor failed. Replaced that & checked air filter. With onset of cold weather start problem ensued with regularity. Cold weather start problem first occurred at about 30K, dealership fixed under warranty. Have since taken it to independent import repair shop with excellent service history of 30+ years in NE Wisconsin. Bought extended 2-year warranty with car so forced to go to MB dealer with limited diagnostic skills. Was told that replacing regular octane with premium solved the problem......after they had it for 3 weeks. After reading on RepairPal about crankshaft sensor failure on C240s, asked if they had checked that and was pretty much dismissed.