Talking of second batteries...

Uncle Benz

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I replaced the batteryon my ML this week (W164). It's my own fault - I SORN'd it in March as I wasn't going to be using it again for a while, and neglected it to the point of the battery being stone dead. I pulled it out to charge it, but to no avail. New one fitted now, and all fine, but whilst in the compartment (under drivers seat), I noticed a small additional battery. What does it do?? No SBC on this model. Would never start the car - about 4 inch cube.
 

Cole@MBS

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I replaced the batteryon my ML this week (W164). It's my own fault - I SORN'd it in March as I wasn't going to be using it again for a while, and neglected it to the point of the battery being stone dead. I pulled it out to charge it, but to no avail. New one fitted now, and all fine, but whilst in the compartment (under drivers seat), I noticed a small additional battery. What does it do?? No SBC on this model. Would never start the car - about 4 inch cube.

Its the back up battery for the Electronic selector control Uncle!!
 

Cole@MBS

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Yes!

Its for that very thing,

The funny thing is, it has never worked for me,

Every 164 i have been out to for a dead battery or stuck in park, the only way to get them out of park is via star!!

Oh, and a jump pack!!
 

television

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Yes I have just been reading up on it,,the chances are that the DC/AC inverter packs up and the little one does not get charged
 

type49

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Interesting! For what purpose?? To get it out of park if battery dead??

On the right train of thought but the wrong direction:(
It's to put the box INTO park if the main battery fails - pain in the arse but typical of Mercs safety ideas;)
 

television

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On the right train of thought but the wrong direction:(
It's to put the box INTO park if the main battery fails - pain in the arse but typical of Mercs safety ideas;)

Thank you,,:D:D I searched for ages and did not come up with anything ;)
 

Alex Crow

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seems a godd place to tag this on, anyone know causes of non starting on the 164? this is a late 2006 320 cdi 164, it will occasionaly not start, but will respond to a boost pack every time. this will somtimes happen in jsut 3hrs. MB replaced battery and alternator last year. i wondered if anyone of the MB mechanics on here have any previous of excessive quiescent draws on these?? it is in on thursday so i thought i would ask here before i get involved. oh also, it will be fine for weeks then play up suddenly.
 

television

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That must be the worst fault that you could ever get, just for the minute I am thinking earth straps
 

Cole@MBS

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Under the jumping point is a row of strip fuses, seen a 164 without a 10mm nut on one end of the fuse, hence, jump start ok!

Worth a looky!!
 
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