Engine not cranking..!

[kole301]

SLK 200 European 136 HP from 1998
Engine not cranking..!
Key on “1”: SRS light is turning on for three seconds and turning off...
Key on “2”: All lights on, not the SRS light...
Trying to turn on: Not a click... Fulll silence only the radiator fan is turning full speed...
What might be the problem and of course the solution..?

 

[jud149]

Have you done a load test on the battery and if good, checked for clean connectors?

 

[kole301]

The battery is new...
Reading other threads and other forums it seems to me that my problem might be related to a K40 relay issue... Any such experience..?

 

[grober]

Could be a problem with the starter inhibitor switch at the base of the gear selection lever, or possibly a faulty ignition switch?

 

[jud149]

The battery is new...
Reading other threads and other forums it seems to me that my problem might be related to a K40 relay issue... Any such experience..?

A new battery is not necessarily a good battery. I would check it.

 

[kole301]

Battery is OK... The K40 relay and 15A fuses look normal...
Just a question about the 40A fuseof the K40 relay...
Is this shape is correct..? Or blown up..?
If everything OK on this front what to look next..?

 

[kole301]

Or tbhe one circled in red is defective..?

 

[kole301]

Yesterday evening cleaned the K40 relay and the connections with electronic cleaning spray... Recentered the coil of the transponder... Tried the car with the spare key... Result: WROOOOM...
Tried to move the car this morning...
A big “thump" and the transmission went into “limp mode”...
Took the car to an independent MB service...
Left engine mounting bloc was defective... Changed both...
Back home: WROOOOM and WROOOOM...
Life is beuatiful and even better with SLK...
Work: two hours... Cost: 303,- US dollars parts included...