Mercedes Repair Questions? Ask a Mechanic for Answers ASAP
Hi Robert, voltage to the solenoid comes from the ignition switch then goes to the neutral safety switch on the transmission and then to the starter solenoid. You need to get a voltmeter and start taking some voltage readings. First measure the voltage at the solenoid with the wire connected to the solenoid and the key turned to the start position. Next move to the junction block on the passenger side inner fender and measure it there. Keep working your way back towards the ignition switch until you find your voltage drop. All tests need to be done with the circuit connected and the key turned to the start position. I suspect you either have a problem with the neutral safety switch or with the wiring from the switch to the starter. It's possible that you have a bad ignition switch. You just need to take your voltage readings and find out where in the circuit your voltage drops.
Let me know if you have any questions.
I sent you a phone offer if you would like me to call and help you with this.
Hi Bob, if you tried everything I suggested I will need to no whether you found voltage drop in the circuit or you didn't. I can help you get this sorted out but I will need to talk with you on the phone.