Due to my car being a Year 2000 E320 CDi I do not expect much response from the US. Howe... - Benzworld.org

MikeStone · 10-05-2002, 10:24 AM

Due to my car being a Year 2000 E320 CDi I do not expect much response from the US.
However European contributors might have had this problem.

When I go to start the car the Pre-Heat Light comes on as normal.
When it goes out I crank the car and it starts straight away.

After a few seconds the Pre-Heat Light comes on again and stays on for a length of time.
Sometimes 10 Seconds other times a few minutes.

No malfunction is flagged and the car starts and drives normally.

This has only started in the last few days.

Any guesses as to what is going on ????

AlanMcR · 10-07-2002, 03:31 PM

I have the older OM606 motor, so take my comments with a grain of salt.

On older systems, the symptom you mention is the way that the glow plug controller signals that one or more of the glow plugs is out of spec. I doubt that this function has changed on the CDIs. Also I don't think that glow system problems are passed onto the OBD system, so you won't see any check engine messages.

Check the resistance of each glow plug.

MANMINDER · 05-13-2003, 02:00 PM

THIS IS DEFFINATELY BECAUSE OF ONE OF YOUR GLOW PLUGS NOT WORKING PROPERLY. ME OLD MAN HAS A SPRINTER AND HAS THE SAME PROBLEM WITH THE GLOW LIGHT AFTER I CHANGED THE 4 GLOW PLUGS IT WAS OKAY.

Lightman · 05-15-2003, 10:10 PM

Check the glowplugs, and the glowplug circuit. You could have 1 out of 6 bad sending the light on, but your car probably starts and functions fine with most of them working, or it hasn't gotten that cold there. Any updates, did you get it fixed?

MANMINDER · 09-10-2003, 04:39 PM

dear sir
i am also in england and have a problem
my e class has just been broken into. the passenger side seat is ripped (leather) and the steering wheel is also damaged with the leather ripped off. this was all done by a brick. anyway i was wondring if you knew of any mercedes benz scrap yards or breakers in england. my car is an e220 cdi.

your help will be well appreciated
thank you

matteus · 09-13-2003, 05:01 AM

a bit of topic, but perhaps good to know (ofcourse if your glowplugs work properly):
with the 320CDI (and probably all other CDI's), you don't HAVE to pre-heat the engine before starting.
You can just get in the car, put the key in, and turn it over.
It's a socalled 'fastglow system'.

greetings,

matteus