V35 Electrical Problem!

[HiEUmungus]

Hey guys

My old v35 skyline is having some electrical issues. The car hadn't been driven for a few days, battery went dead. The immobiliser and alarm would not disable and pretty much all electrics did not work. Had the battery as well as the battery in the key replaced, the car started again. A few days later, the new battery went dead again. Back to the workshop, we thought it might've been the alternator but the workshop thinks it's the alarm draining the battery and not the alternator failing to charge the new battery. Has anyone had experience with this in the past?

Cheers

Hieu

[scotty nm35]

Water in the battery compartment is the usual suspect with electrical issues. Good chance it isn't draining properly, filling with rain and shorting the relay box.

[HiEUmungus]

I'll check it out. Cheers Scotty

[Nismo 3.2ish]

I bought a 2002 350GT Skyline 7 years ago and had some very bad times with the electrics.

Turn the ignition off and the lights, blinkers would come on and could not turn them off unless I disconnected the battery.

Go out in the morning and the battery would be flat, all sorts of crap like that but whenever I took it to a shop it was always OK, bloody nightmare

But the more I used it the less it happened and finally it was all good, stuffed if I know what was going on???

Not sure if others have had similar problems with the 350s ??

[_thom_]

You can use a voltmeter to check if the alternator is working - you should be getting around 14v at idle.

To see what's drawing current (when the vehicle is off) measure the current draw and start pulling fuses. If you see it drop significantly you've likely found the culprit. The power supplies in the OEM headunit often fail and something simple like a globe in your boot/glove-box could be stuck on.

Tracing a parasitic current draw isn't the best way to spend a weekend, but it's better than dealing with a flat battery.