ML500 Battery Drain
Thread Starter
Senior Member
Joined: Aug 2017
Posts: 393
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From: Ontario, Canada
2006 ML500, 2008 ML350
ML500 Battery Drain
Hi,
It is expected that computers use battery even when the car is not running.
I have a brand new battery on my 2006 ML500 and only have to leave it for a week or so when the voltage drops to around 10 and it won't start.
I have an ML350, and very old BMW X5 with over 5 years old batteries, and they both start at a snap even after few weeks of sitting idle.
I've check the drain on ML500 and it's within millivolts. Any suggestion?
Thank you
It is expected that computers use battery even when the car is not running.
I have a brand new battery on my 2006 ML500 and only have to leave it for a week or so when the voltage drops to around 10 and it won't start.
I have an ML350, and very old BMW X5 with over 5 years old batteries, and they both start at a snap even after few weeks of sitting idle.
I've check the drain on ML500 and it's within millivolts. Any suggestion?
Thank you
Thread Starter
Senior Member
Joined: Aug 2017
Posts: 393
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From: Ontario, Canada
2006 ML500, 2008 ML350
Eleminator Ultra, Canadian Tire
But had the same problem prior to changing the battery when the original MB battery was in operation.
My 2008 ML350 still running with the same 10 year old MB battery and has absolutely no hesitation in starting after couple of weeks sitting idle in Canadian winter!
But had the same problem prior to changing the battery when the original MB battery was in operation.
My 2008 ML350 still running with the same 10 year old MB battery and has absolutely no hesitation in starting after couple of weeks sitting idle in Canadian winter!
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From: Bronx, N.Y.
2002 ML 320 & 2006 ML500
First, could you please UPDATE YOUR PROFILE in USER CP to include the year and where you live.
The only thing I can suggest is to perform a quiescent current consumption test.
Thread Starter
Senior Member
Joined: Aug 2017
Posts: 393
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From: Ontario, Canada
2006 ML500, 2008 ML350
Thank you Sir. Very elaborate procedure.
As a side note, how do we find out about the models like W164...; transmission type etc. I can only refer to Wikipedia. But is there a more technical way?
Thanks for your help.
As a side note, how do we find out about the models like W164...; transmission type etc. I can only refer to Wikipedia. But is there a more technical way?
Thanks for your help.
MBWorld Fanatic!
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From: Bronx, N.Y.
2002 ML 320 & 2006 ML500
First let me tell you that your 06 ML500 is the best of all the W164 models and if you take care of it, it will last for years.
Learning about the 164 can only be archived by visiting the forum daily and read about all the problems, but they are all usually about diesel engines. Save everything that applies to you vehicles and you won't have to search for it in the future.
Here is the explanation of the 722.9 trans.
Learning about the 164 can only be archived by visiting the forum daily and read about all the problems, but they are all usually about diesel engines. Save everything that applies to you vehicles and you won't have to search for it in the future.
Here is the explanation of the 722.9 trans.
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Thread Starter
Senior Member
Joined: Aug 2017
Posts: 393
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From: Ontario, Canada
2006 ML500, 2008 ML350
in Test 3 instruction, item 9 states "Remove battery cover (12) and detach cover from positive battery terminal (6)", but that terminal is not used throughout the instruction.
Is there an explanation. It is a very involved procedure.
Thanks
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Thread Starter
Senior Member
Joined: Aug 2017
Posts: 393
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From: Ontario, Canada
2006 ML500, 2008 ML350
Member
Joined: Apr 2017
Posts: 219
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From: UK
ML420 W164 (2009)
Have you checked the condition of the auxiliary battery?
Also, with a cold engine, check the back of the alternator with your hand, see if it's getting warm.
If you have access to a thermal camera that'd be great! Check for hot spots everywhere.
Also, with a cold engine, check the back of the alternator with your hand, see if it's getting warm.
If you have access to a thermal camera that'd be great! Check for hot spots everywhere.
Last edited by texterted; Mar 22, 2019 at 03:20 PM.
Thread Starter
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From: Ontario, Canada
2006 ML500, 2008 ML350
[QUOTE=texterted;7712300]Have you checked the condition of the auxiliary battery? Apart from voltage, what else has to be checked on the auxiliary?
Also, with a cold engine, check the back of the alternator with your hand, see if it's getting warm. I checked, and it's cold
If you have access to a thermal camera that'd be great! Check for hot spots everywhere. Don't have it yet.
Major,
Please have a look at the item 9 on Test#3 that you sent. I'm following the procedure step by step, item 9 seems to be out of place, or is it?
Thanks,
Also, with a cold engine, check the back of the alternator with your hand, see if it's getting warm. I checked, and it's cold
If you have access to a thermal camera that'd be great! Check for hot spots everywhere. Don't have it yet.
Major,
Please have a look at the item 9 on Test#3 that you sent. I'm following the procedure step by step, item 9 seems to be out of place, or is it?
Thanks,
Last edited by anavabi; Mar 23, 2019 at 01:48 PM.
Thread Starter
Senior Member
Joined: Aug 2017
Posts: 393
Likes: 10
From: Ontario, Canada
2006 ML500, 2008 ML350
Sorry Texterted, I didn't realize the posting was from you!
Thread Starter
Senior Member
Joined: Aug 2017
Posts: 393
Likes: 10
From: Ontario, Canada
2006 ML500, 2008 ML350
Thread Starter
Senior Member
Joined: Aug 2017
Posts: 393
Likes: 10
From: Ontario, Canada
2006 ML500, 2008 ML350
MBWorld Fanatic!
Joined: Oct 2011
Posts: 7,107
Likes: 765
From: Bronx, N.Y.
2002 ML 320 & 2006 ML500
Thread Starter
Senior Member
Joined: Aug 2017
Posts: 393
Likes: 10
From: Ontario, Canada
2006 ML500, 2008 ML350
It's rather funny. I got numerous codes that weren't my concern nevertheless they showed up. Please see attachment.
The code 9000 disappeared the second and third time for some unknown reason.
Please tell me what you think about the codes.
Thanks,
The code 9000 disappeared the second and third time for some unknown reason.
Please tell me what you think about the codes.
Thanks,
MBWorld Fanatic!
Joined: Oct 2011
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From: Bronx, N.Y.
2002 ML 320 & 2006 ML500
Now that you have a record of the codes, delete ALL codes, then drive the truck as usual.
If the CEL comes on, do not turn off the eng. and immediately check for codes in all modules, and document them as you did before. This means that you should carry your Foxwell with you.
If the CEL does not come on, drive the truck as usual, and after three days or so of driving, check for codes in all modules and document them, if any are stored.
Take note that all problems with a vehicle will not illuminate the CEL. You can still have codes stored.
If the CEL comes on, do not turn off the eng. and immediately check for codes in all modules, and document them as you did before. This means that you should carry your Foxwell with you.
If the CEL does not come on, drive the truck as usual, and after three days or so of driving, check for codes in all modules and document them, if any are stored.
Take note that all problems with a vehicle will not illuminate the CEL. You can still have codes stored.
Thread Starter
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From: Ontario, Canada
2006 ML500, 2008 ML350
Sure will. Just let you know that I had no onboard message or as you call CEL for these codes. They only appeaed as the result of scanning the entire system.
Thread Starter
Senior Member
Joined: Aug 2017
Posts: 393
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From: Ontario, Canada
2006 ML500, 2008 ML350
