maybe a bad sensor or even bad wiring for the sensor?

the oil level sensor should be on the bottom of the sump, check the wiring?

hafizur

Which "warning light" is it?  There are two or three (maybe just two, I think Audis have three) specific oil-related warning lights on the Golf V - a red one for low oil pressure (not good - stop the engine immediately), and an amber oil warning light for the oil level sensor (if this lights up, it can either mean the oil level is too low, or the sensor is faulty).

The oil level sensors are known to have ocasional problems, which is why they shouldn't be relied upon.  VW fitted a dipstick, so it would be good if everyone used them!

The other crucial question is what oil are you using - what brand, type and VW spec?

It's the amber warning light, as for oil I am not sure what the R32 uses as I picked up the car a few weeks ago from a VW dealer. 

gtiboy:

It's the amber warning light, as for oil I am not sure what the R32 uses as I picked up the car a few weeks ago from a VW dealer. 

OK, the amber one is the oil level sensor.  If you are sure you are checking the level with the dipstick correctly, in accordance with the owners handbook, and the level is close to the max mark, then the sensor is prolly knackered.  However, as one of the previous posters suggested, it might be worth checking the wiring to the sensor - both for any chaffing of the wires, and the actual plug connection.  If you can, remove the connector, and spray some silicone grease to protect the terminals.  Don't use WD40 or similar, as it will rot the ridged rubber seal inside the connector.

Regarding the oil, it should only really be having the LongLife3 spec oils - which meet VW504.00 standard, though some use the older VW502.00 oils, which, whilst not being longlife oils, are also not as good as the latest LL3 oils.  Do I presume correctly that it is not a brand new car?  Look in the service book and see what any previous services used - there should be a "tick-box" for the type of oil used - though many dealers get that wrong!

HTH

Yes the dipstick shows oil level full. The oil warning light is now permantely on. where is the wiring located so I can check to see if its come loose?

And I think it is using VW504 oil.

gtiboy:

The oil warning light is now permantely on.

Ohh - that's not good!

gtiboy:

 where is the wiring located so I can check to see if its come loose?

The sensor is usually located in the bottom of the sump.  It is quite a "flat" type of object, maybe about 40-50mm square (rather than cylindrical sensors such as oil pressure or coolant temperature), with quite a wide connector (about 25mm wide IIRC).  Some of the sensors even have little cooling fins, similar to air cooled motorbikes (and also air cooled Dubs too!).  I can't tell you the exact location, because I'm not too familar with the VR6 motor.  My VAGs have to have either a blown 4-pot or a naturally aspirated V8!

Maybe download the VR6 manual from one of my threads on another forum: http://www.golfgtiforum.co.uk/index.php?topic=54324

gtiboy:

And I think it is using VW504 oil.

OK - don't suppose you know the brand?  Do you have the top-up bottle in the boot?  I ask, because some oils "claim" to be VW504, but have never been approved by Volkswagen - Mobil were very guilty of that trait, though their "Mobil 1 ESP" is approved.  Comma and Millers are also guilty too!

If you've only had the car a few weeks, take it back to VW.

wellsy:

If you've only had the car a few weeks, take it back to VW.

Good point!  I knew there was something else I needed to say in my previous post!

Yeah im gonna be taking it back to VW, I hope I don't become one of those people where by you drop you car in for fault thats fixed under warranty but only to reappear a few weeks later.

Well theres a spare half litre of Castrol Oil in a leather pouch in the boot, i think that says VW504 on it. 

Do R32 owners find the dipstick level difficult to read/judge where the min and max levels are? and does this apply to the GTI?