MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: drexel75 on January 17, 2012, 04:55:54 pm

Title: Cooler level sensor
Post by: drexel75 on January 17, 2012, 04:55:54 pm

Had the STOP! Check coolant level warning yesterday. Checked the level and it was ok but right on the minimum line so I topped up to almost the max. The warning still comes on but goes out if you turn the ignition off and restart. I read that the sensor may be faulty. Am I right in saying that this sensor is integrated into the expansion tank? How difficult is replacing the expansion tank? Thanks for any help.

Title: Re: Cooler level sensor
Post by: gazon69 on January 17, 2012, 06:20:05 pm

Yes indeed it is inside the tank, they are prone to failing and are a doddle to replace, they can be replaced in around half an hour depending on competence.

Title: Re: Cooler level sensor
Post by: drexel75 on January 20, 2012, 04:16:58 pm

Tank changed. Dead easy. Only cost £17 for genuine expansion tank so was well chuffed. No more coolant warnings.

Title: Re: Cooler level sensor
Post by: Matt_greig on January 20, 2012, 04:24:22 pm

I have the same problem, where did you get the tank from? VW dealer? Do you have the part number for it?
Also, how easy was it to change? Did you have to drain the coolant first?

Thanks, Matt.

Title: Re: Cooler level sensor
Post by: drexel75 on January 20, 2012, 06:16:50 pm

Got the new tank from the main VW dealer. Unscrew 2 Torx screws holding the tank on. Take off sensor attachment and remove the two hoses. I used a pair of pliers to slacken the hose clip. You will lose the coolant that is in the tank but after you have reattached everything it should only take about 750ml to top the coolant up to the recommended level.
Dead easy and only took me about twenty minutes, spent longer trying to find the Torx screw that I dropped  :ashamed: