not a single working window - PeachParts Mercedes-Benz Forum

turbobenz · #1 03-03-2011, 04:45 PM

ok friends I got the windows working. Fuse #12 had a hairline crack. This didnt solve the starter issue. Lately the car has accidently sat withthe key in the ON (glow plugs on) position several times in the last few weeks while we work on it. Could this have damaged a relay somewhere? When I turn the key nothing happens at all at the starter. Its not the battery contacts, their tight and the car is getting electrical power and when i do attempt to crank it none of the lights dim or anything so the cars just not sending power to the starter. Im beginning to suspect that its the ignition switch itself

Diesel911 · #2 03-03-2011, 07:50 PM

Quote:

Originally Posted by turbobenz

ok friends I got the windows working. Fuse #12 had a hairline crack. This didnt solve the starter issue. Lately the car has accidently sat withthe key in the ON (glow plugs on) position several times in the last few weeks while we work on it. Could this have damaged a relay somewhere? When I turn the key nothing happens at all at the starter. Its not the battery contacts, their tight and the car is getting electrical power and when i do attempt to crank it none of the lights dim or anything so the cars just not sending power to the starter. Im beginning to suspect that its the ignition switch itself

Clip on a Remote Starter to you Starter Solenoid and a Posative source of Voltage and see if it the Starter will crank. If it does there is a good chance it is the Neutral Safety Switch (if your car has an Automatic Trans).

I do not know if the follong info will apply to your 300CD or not:

No Cranking explanation from 240D3.OT mbworld.org.
http://www.mbworld.org/forums/diesel-forum/313982-no-crank-1984-300d.html
“First make sure the selector is in P or N. Cycle through all the gear positions and try in N.
In front of the battery is a small rectangular box. Use a jumper wire to jump from one of the large posts to the small post with the purple wire. If it cranks, you've got an issue with the neutral safety switch or the ignition switch.

Above the accelerator pedal is a 4-wire plug with a harness that runs down to under the accelerator pedal and to the transmission tunnel. Unplug it, jumper across the two purple wires in the female plug and try to start again. If it starts, you need a NSS.”

I do not know if your cars wiring is the same but I got part of this quote from another Forum concerning a no cranking problem with an 84 300D.
“First make sure the selector is in P or N. Cycle through all the gear positions and try in N.
In front of the battery is a small rectangular box. Use a jumper wire to jump from one of the large posts to the small post with the purple wire. If it cranks, you've got an issue with the neutral safety switch or the ignition switch.
Above the accelerator pedal is a 4-wire plug with a harness that runs down to under the accelerator pedal and to the transmission tunnel. Unplug it, jumper across the two purple wires in the female plug and try to start again. If it starts, you need a NSS.”