I have a 2002 e825. My gel batteries are less than 6 months old. Now the vehicle will not go. Individual battery voltages are all over 13 volts. Total voltage is over 78. When I turn the switch and drop the parking brake, I don’t hear the contractor “clunk”. The hour meter quickly goes to all zeros and the warning buzzer sounds. Do I have a contactor problem? How do I trouble shoot?
Disclamer: I’m not much of a mechanic.