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R350 intermittent starts

Kingpin!

Active Member
Joined
Oct 25, 2007
Messages
184
Location
EU
Car
R350 (W251) & R350 (V251)
Have a new issue with my older R350.

Lately the car will not crank when starting. I'm not 100% sure (yet) if it's only when the car is warm or not.

For example; Left home the other day, car hadn't been used for a day and it's cold outside, drove for like 15-20 minutes, parked the car, came back after 15-20 minutes, the car will not crank. Waited for like 45 minutes and suddenly the car cranked, went home (which takes 6-7 minutes). Tested to crank, car immediately after parking at home and turning off the engine, car will not crank/start.

The lights on the dash works, everything works/acts normal except the cranking and when it doesn't work I don't hear any "tick tick" sounds either.

I have changed to the spare key, same results.

The battery is good.

Have tried removing the Keyless Go button and using the key instead, same results.

Again, I'm not 100% sure if it's only when the car is warm (when it has come up to a certain temperature).

Any ideas?

Can a starter relay be intermittent? Corrosion in the (front) fusebox?


TIA!
 
Maybe this post belongs in "Electronics and Audio" instead?
 

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