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 FAQ #219
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Jump start to or from a C4?
This is the layout on my VTS. Negative is hidden down the back but is quite easily accessible with a set of jump leads.

The idea of hooking up the negative to a bolt or exposed metal would be correct as it's a common ground point.

Here's a few pics:






Also this might be a good read:

Jump-starting your car is not a difficult task. First lay out the cables on the ground between the two cars. Make sure that the cable is not twisted or tangled and none of the end clamps are touching each other. You should make sure that the car with the good battery is running.

Step 1: Take the positive (red) clamp closest to the car with the good battery and hook it to the positive terminal of that car. The positive terminal will have a + sign on it and usually a red wire running to it.

Step 2: Repeat this step on the car with the bad battery, hooking up the positive clamp to the positive terminal on the battery. Make sure the clamps are contacting well and can not fall off.

Step 3: Take the negative cable (black) closest to the car with the good battery and hook it to the negative terminal of the battery. The negative terminal will have a - sign and usually a black wire running to it.

Step 4: This is the last step and the most important. Take the negative clamp closest to the car with the bad battery and attach it to a bare metal part of the engine. DO NOT hook it to the battery negative terminal as there maybe hydrogen gas present from the battery and a spark from the connection could cause an explosion.

That's it...... turn the key on the dead car and the car should start. If it does not, try revving the engine on the good car to boost the pwer coming from the alternator. If this does not work, try wiggling the cables to assure you have a good connection.
GOOD sets of jumper cables are a necessity. I have had cheaper sets not jump-start a dead car. I actually had to double up two cheap sets to get enough current to start my car. The cheaper sets will have thinner cables, which have a higher electrical resistance and cannot carry enough current to start some stalled cars. I would suggest buying a cable, which has 4,6 or 8-gauge wire.


Read more: How the Electrical System on Your Car Works
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FAQ Posted by Darren
Info Created: 05 December 2010
Last Updated: 05 December 2010