Date registered: Sep 2006
Vehicle: 2004 CLK 240 Coupe
Location: Norfolk. UK
Mentioned: 9 Post(s)
Quoted: 341 Post(s)
Providing that the 'Drive Authorisation System' allows you to fully turn the ignition key to start the car, a Starter relay (K40/4k2) should operate to allow the starter solenoid to function. This brings full battery power to the starter motor.
The starter relay (k2) is located in the passenger-side fuse & relay module (K40/4) in the engine bay.
This relay may have failed. It should click when attepting starting. If it does, then the fault might be in the starter or the starter solenoid.