All Things Mk5 > How to Guides / Troubleshooting
Battery drain still happening... Completely stumped :( **UPDATE**
Craigh1983:
--- Quote from: MJ on April 08, 2014, 12:43:28 pm ---I'm well aware of the alarm horn issues. I've had it on my own car but Disconnecting it has got to be worth a try For the OPs sake. Unless you mean that fault was induced when you tested the circuit and wasn't there before?
--- End quote ---
My alarm has never worked since the day I bought the car 2 years ago and the battery hasn't drained up until a couple of months back.
To be honest I just can't be arsed with all this now lol The car has been a bad one since the day I got it. problem after problem and I can't waste anymore time and energy and money on it. I may charge the battery up and part exchange it if I can't get to the bottom of this easily. I have no knowledge of all this kinda stuff so being able to get to the bottom of the problem is going to be very difficult :(
It's not even like I have a mate who is just around the corner who can spend the hours it needs on it.
Completely at a loss!
dan930:
I've also had this problem so brought a cheap 027 lion battery from europarts,all seems good for a month until it started to get colder during dec-jan...can't start the car if I didn't use it for 36hours...brought a Bosch s5 & touchwood all is ok for now
Here is the info i copied from the europarts page
Detailed Product Information
The Bosch S5 Battery range is ideal for vehicles with higher than normal electrical drains. Most modern vehicles are now fitted with heated seats, windscreens and other electrical drains. The Bosch S5 car battery is able to offer up to 30% more power compared to the factory fitted battery, Because of this is also have up to 30% longer service life. All Bosch S5 batteries are sealed and maintance free for maximum peace of mind
Amp Hours: (Ah): 74AhCold Cranking Amp: (CCA): 750CCALength: 278mmWidth: 175mmHeight: 175mm
Craigh1983:
I can't see it being the battery to be honest mate. Drive around 100 miles over the weekend. Parked car up Sunday night and Tuesday morning completely flat. I would have thought the s5 can hold charge for more than 2 days.
MJ:
I've seen door control modules cause problems like this when one of the can bus wires brakes but they usually log a single wire fault. Same time span for the battery to go flat too.
Craigh1983:
--- Quote from: MJ on April 08, 2014, 03:07:58 pm ---I've seen door control modules cause problems like this when one of the can bus wires brakes but they usually log a single wire fault. Same time span for the battery to go flat too.
--- End quote ---
John from the forum said he thinks it could be a door module or boot switch. How am I gonna tell it's that though? Do I just keep taking a voltage reading from the fuses every now n then to see if something has woken up?
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