You've got to start at the starter, and work your way back through the components. Is the starter getitng current? If so, the unit is faulty and must be replaced. If not, where does the circuit lead to? I don't know, but my first inkling is that the starter is dead. Confirm that it is not before you begin tearing into other stuff.

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John Shellenberg
1998 C230 "Black Betty" 240K

http://img31.exs.cx/img31/4050/tophat6.gif

Starter in not dead, the car most often starts without any problem.

My issue was both the vehicle did not crank on some occasions and it cranked but it did not started. But to confirm I went out to the vehicle and installed my old K40 and the vehicle cranked but it didn't start. You maybe right you may have some other issue, unless the K 40 has two of the relays one for the ignition and the other for the starter, but I'm not sure if this is the case. Perhaps someone can let us know the systems that each of the relays in the K40 controls?

Norman

Thanks for the info and your confirmation. You are right I really need to know if there is any direct connection between the K40 module and the starter motor.

Anyone knows?

I have now replaced the ignition switch on my car. After five days the problem has not occurred. Just keeping my fingers crossed and hope that this is resolution…

I can now say that by problem is resolved by the above change!