IF the car has a heater, the plug should be either under the front
bumper OR on passenger side of car (open hood and look behind the head
NOTE: SOME cars do not have the heater. (usually only equiped on
cars that were being shipped to cold climats). You can order a heater
on line if you want.
Glow plug relay is very easy to change. I would just order it
online, is shipped. However, it usually is NOT the relay that goes
The way to check is to disconnect one of the glow plug wires and check
the voltage from the wire to ground. Then flip the key as if to start
the car. You should read 12 volts.
If you do NOT, then disconnect all of the wires to the 5 glow plugs.
Then check for voltage (after you turn the key). This is the sure
check if it is your relay.
You see if 2 or more glow plugs are BAD, then the relay will NOT work.
(The relay is designed such that if there is too much current/draw on
the relay, the relay will trip off. It appears the relay is bad but
it is doing what it is suppose to.
> :? :? I can't find the plug, does anyone know where it is?
> My 300D is on passenger side front, but can't find the 300SDL
> plug. I just changed the glow plugs, but have problem with
> relay. Until I can get it to the shop, I need to plug it in
> for the first start of the day. Anyone know where it is?