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Changing an E36 battery.

Changing an E36 battery.

Difficulty:  Easy
Labor:  I hour hrs
Parts Cost:  $233 +/-
Service Interval:   N/A

My old trunk’s battery died and it was finally time to replace it with a new one, so I thought of getting together a DIY and get it fixed! It’s pretty easy, all you have to do is follow the steps and you should be fine.

 



Steps

1
Open up the battery cover.  

You’ll find it located on the right side of the trunk, remove the plastic screw and nuts that hold it in place then remove the located on the right side of the trunk, remove the plastic screw and nuts that hold it in place then remove the battery bracket holder which is located on the negative side of the battery. You’ll need the socket wrench and fittings for this.

2
Connect the negative cable.  

Connect the negative end of the jumper cable from the negative post of the new battery to the negative end of the battery ground and you do the same to the positive side.

3
Connect positive cable.  

Connect the positive end of the jumper cable from the positive end of the new battery to the positive end of the edge of the lug of the old battery.

4
Remove the nuts.  

You then loosen the nuts which are holding the negative and positive lugs on the old battery and remove them starting with the negative, then the positive lug. Make sure the positive end of the jumper cable and lug is not touching the chassis.

5
Remove the black air-breather tube.  

The tube is located on the positive end of the top edge of the battery.

6
Pull out old battery, and connect it.  

Then pull the old battery out, and bring it to the front of the truck. Open the hood and also the positive connector cover. Connect the old battery with the jumper onto the negative and positive posts which you’ll find located on the upper left side of the engine bay.

7
Bolt in new battery and remove old battery.  

Take the new battery and bolt it in place. Then bolt the negative and positive lugs.
Then remove the old battery from the engine bay by taking out the negative and positive jumper ends, then place the positive post cover back onto the positive post.

Make sure that the battery is flushed with upper right hand corner of the battery housing so that the battery cover can be placed back over properly when you’re finished.

8
Close tray and secure battery.  

Close up the battery tray after carefully securing the battery in place.

9
Start engine.  

Start the car and let it run idle for 15 – 30 min to charge the battery. Feel free to drive your car around. And you’re done!

Sources

http://www.bimmerfest.com/forums/showthread.php?t=122798

http://chrisparente.com/2012/10/02/e36-m3-battery-replacement/

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