2008 VOLKSWAGEN GOLF Mk5 (1K) 1.4,1.6,2.0L Petrol AIR CON A/C COMPRESSOR PUMP (Fits: VW Golf) £31.68 2013-2019 VW GOLF R MK7 / AUDI S3 8V A/C COMPRESSOR PUMP 5Q0816803B Once the leak has been found, this must be closed again by replacing the respective component. 4. Dirty evaporator. Dirty evaporator can also be the reason for AC problems on your VW Jetta. Cabin air filter captures most of the dirt or other airborne particles, but some escape and fall on to the evaporator. Coolant warning light (check coolant level) « on: January 20, 2011, 09:41:52 am ». Hey peeps, I've had the Mk5 GTI for over a week now and. loving every aspect of it, other than a slight niggle: when starting up from cold the coolant warning light. will come on saying check coolant. I've checked the coolant and levels are above min and no. Usually you will want to measure, however there may be a facotry belt available for non air conditioned vehicles. With your vehicle info handy, give The Pelican Parts parts specialists a call at 1-888-280-7799. They can figure out what part or repair kit you need. - Nick at Pelican Parts I have a 2006 gti and the aircon is not working. I had a chap out yesterday to re-gas the system but it was already full and he said that the refrigerant wasn't circulating, the pump is not engaging and the rad fans are not turning. I have read on the forum that the pressure switch can go and my question is this. Apparently this is a big problem with the VW golf era. Since February I have been to two different car service station and their results were that I should change everything. So no repair but just replace it. The radio keys just work.I press once and all the doors open but not always. I think it is a cable break between the door and the frame. There is no amber lens for the rear turn signals, nor a rear fog light. They look like US spec dark red tail lights. When you pull the bulb holder out to change the bulbs, is there a red and black wire attached, going inside the tail light. There should be, those are the wires for the rear sidemarkers. Do a retrofit! many thanks. morgan. you need about £500 worth of equipment, for this and it is illegal to release refrigerant into atmosphere, and no matter what anyone says you should not have to top up an ac system because that means there is a leak on the system which is also illegal. It should never lose it's refrigerant charge through all its lifetime rDpKn.