'95 C280 31K miles. Searched archives for neutral safety switch info.
Synopsis: Turn key to start and no action
except for normal dash lights. (new battery, plugs and wires) Tried to start in neutral
and no go. After a while tried again to
start in park and it worked. Worked again
after I got home.
ODDITY: Before failing to start the first time, I opened the locked car via the trunk.
All door locks opened except the passenger side. When I got home I was testing the
HVAC fans and electrical features. The door
lock button on consol does operate all
doors except it is NOISY as the door locks
engage or disengage. I also hear a noisy
apparatus at the rear passenger side back
seat (area).
Could this be related?
Vacuum problem or neutral safety switch ?
Any opinions would be appreciated.
THANK YOU.
Update: Everything works fine now. Starts, automatic locks (although still a bit noisy)
However, it will start in NEUTRAL as well as in PARK. Neutral safety switch and lock-out relay?
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1979 300D
133K miles
1989 300SE
1995 C280

[This message has been edited by unkl300d (edited 11-19-2000).]

Yes the central locking system must send signal to disengage starter lock-out relay. Central locking pump is in trunk on rt side. If locking & un-locking doors allows starter to work the pump isn't sending correct signal to relay all of the time.