ml3204me

Sooner or later - You will have to change yours... Detailed video here:

phlfly

Great Thanks

2008 ML 320 CDI

Thank you. My expectation was for the auxiliary battery to be much smaller! In the video, none of the car settings seem to have been lost with having both the main and the auxiliary batteries disconnected.

ml3204me

You will not lose any settings (radio etc.) as long as you turn off all the components and leave the driver's door open (key out of the ignition off course)

2008 ML 320 CDI

That sounds good and thank you! I expect to go through this process of replacing the batteries in our vehicle one of these days as we still have the originals in place.

JimPurdy

I replaced the batteries in my '11 ML350 today. The main battery was a group 48, not a group 49 as shown in the video. That makes it easier to replace since the group 48 is shorter and there is more room behind the battery for the hold down plate so it is easier to remove the nuts holding it in place. Also, my aux battery was installed with the terminals on the door side not as shown in the video. The hold down cage would not allow the aux battery to slide out because of the terminals sticking up. The hold down cage is held in place with a 10 mm nut in the middle of the back side of the cage. After the nut is removed, the cage can be bent up enough to wiggle the battery out.

sailor06

Do anyone know if the instructions in the video apply to a 2010 ML350?

Maj. Dundee

Yes it does.