All Things Mk5 > How to Guides / Troubleshooting
Battery drain still happening... Completely stumped :( **UPDATE**
ryanpp:
Hi there,
Just got my car back from VW and well, it's not great news.
Basically they charged me £227 and said to me, "we couldn't find the battery drain, but when we put a donor battery on the drain disappeared and we could not recreate it".
So they gave me a car back with a flat battery that is still discharging, claiming that the battery is "Self-discharging", but what really gets me is that they could not recode my steering rack, as they "could not find the battery issue".
Sounds like they just don't know what is wrong with it, so I'll be speaking to a manager for a refund. Disappointing.
I will be working on the car today, and will be doing continuity tests on all circuits, to check for cable degradation, I will be doing current tests on all fuses, and I will also be checking the starter motor and alternator relays , as these are unfused.
Will keep you updated.
ryanpp:
Quick update, with a resistance test across the terminals immediately after disconnecting, there is a resistance that starts at 0.3kOhm and falls down to 0.01kOhm (much like an exponential). Does anyone know if this transient is usual when disconnecting the battery and measuring resistance? I would be inclined to believe that the resistance across the the terminals should be infinite when disconnected, and at the very least a lot higher than 0.3kOhm on initial disconnect.
ryanpp:
Reading initial current draw of 2.4 amps, dropping down to 1.6A once settled - Still too high and would discharge battery overnight.
Will keep updates posted
Craigh1983:
--- Quote from: ryanpp on April 11, 2014, 09:55:15 am ---Reading initial current draw of 2.4 amps, dropping down to 1.6A once settled - Still too high and would discharge battery overnight.
Will keep updates posted
--- End quote ---
Sorry to hear that mate that's terrible!! I'm glad I have resisted on taking it to vw then!
Mine luckily is doing the drain every night now so it should be a lot easier to find fault now.
Just waiting to hear back from someone what fuse 18 (special vehicle unit) is used for?
SI-R32:
fuse 18 for 2005 car, fuse box high or low is indeed for special vehicle thing (possibly for emergency services? or for an amplifier
do you have the OEM amp under either of your front seats for the speakers
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