Finder

So basically the battery was dying due to a faulty boot lock, car would start on the key if it had a good run otherwise I had to jump start. Managed to replace the bootlock and get the car into my garage to charge and now battery is ok - green light on Yuasa battery and it is getting charged by alternator and also CTEK charger says it's ok but it won't start on the key - it will do a single slow turnover at best and then click nothing but it still starts from a powerpack first time. I've been told this is probably a bad ground and/or the starter solenoid question is where do I check for bad ground and is it possible to just replace the starter solenoid or will it need a whole starter unit? I believe to get at the starter I have to take the front right wheel off? Any help appreciated

Simon I think I know exactly what this is as I had exactly the same. Basically the rear screen wash goes through the centre of the wiper motor and an o ring has probably failed resulting in the screen wash spraying all over the inside of the bootlid and the wiper motor which has then caused corrosion in the motor and the boot lock. So it will be a new wiper motor for sure (about £30) and maybe a boot lock (£80) - fitting doesn't take long - less than an hour. For the o-ring - you don't get a new one with the wiper motor so either have a selection box to hand or get one from Audi. I would replace the wiper motor first and at the same time take off the boot lock and spray with WD40 - it might be salvageable. A second hand lock from eBay could be ok but I went through 2 (1 was faulty when it arrived-broken spade connector in the socket) and eventually bought a new one off eBay. The solenoid is less than £20 and is an easy fit.