MK5 Golf GTI

All Things Mk5 => Mk5 General Area => Topic started by: karl210 on January 02, 2014, 10:22:58 pm

Title: finding a parasitic battery drain
Post by: karl210 on January 02, 2014, 10:22:58 pm

This isnt for a mk5 im afraid, my girlfriend has a renault megane 2 and sometimes when it rains overnight the battery will be dead in the morning. Infact the car was working fine one day, i washed it and the car wouldnt start straight after. Does anybody have any ideas where to start looking, im gonna have a good look on sunday and ive had a good search on google but cant really find anything. Would like some ammunition what to look at on sunday before i tackle it blindfolded. If i was to attach a multimeter to the battery and wire it through a gromet in the bulkhead, throw water over the car while someone sits in the car with the multimeter to watch out when there is a draw that could help me to start looking in the right direction would this work?

Title: Re: finding a parasitic battery drain
Post by: Carpy25 on January 02, 2014, 10:25:42 pm

water dead short check the fusebox for water first


Rob

Title: Re: finding a parasitic battery drain
Post by: doylebros on January 02, 2014, 10:34:37 pm

Read this it will point you in the right direction

http://www.popularmechanics.com/cars/how-to/repair/how-to-stop-car-battery-drains

Title: Re: finding a parasitic battery drain
Post by: Markyed30 on January 02, 2014, 11:21:32 pm

I'd take the scuttle panel off and check the drains mk3 clio were bad for clogging up and damaging the wiper motor

Title: Re: finding a parasitic battery drain
Post by: xjay1337 on January 02, 2014, 11:32:20 pm

Use a multi meter and pull fuses until it stops
Generally the easiest way.