diesel pre heater fault

bgatty68 · Post by **bgatty68** » Fri Oct 23, 2009 10:07 pm

had a light warning come up on the dashboard of my SEAT LEON 1.9TDi and after looking in manual found out it is "diesel pre-heater" now what exactly is that and what do i need to do? i know absolutly nowt about car engines

thescruff · Post by **thescruff** » Fri Oct 23, 2009 10:26 pm

It makes it easier to start in cold weather.

Turn the key and wait a while and it should go out, then you can start her up.

bgatty68 · Post by **bgatty68** » Sat Oct 24, 2009 9:29 am

cheers thescruff
will try it and let you know

dewaltdisney · Post by **dewaltdisney** » Sat Oct 24, 2009 10:15 am

The glow plugs help for cold weather starting. When one of them is dodgy it will put a warning light on. You may need to get the plugs checked.

DWD

Post by **ultimatehandyman** » Sat Oct 24, 2009 11:38 am

I changed a set of glow plugs on my Vauxhall Combo van a few years back. I can't remember it being difficult and they were only a few quid each.

Hitch · Post by **Hitch** » Sat Oct 24, 2009 11:45 am

Usually an easy job for someone with some common and a a decent tool kit.

Can be a bit fiddly getting to them on some engines though.

Replace the set, not just one. Probably about £25 for a set

Sparky James · Post by **Sparky James** » Sat Oct 24, 2009 2:37 pm

Is the light flashing while you drive or does it just come on before you start the engine?

If the latter its normal

If the former then some VAG cars and vans use the preheater light "flashing" as a engine management fault warning light. If so you need to have the ecu scanned for the fault.

Good luck

bgatty68 · Post by **bgatty68** » Thu Nov 05, 2009 3:39 pm

sparky james
it comes on while im driving
how much am i looking at to get the ecu checked