ML350 - Fault Code -102100

Daniel Smith

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ML350 Bluetech (2012 W166)
Hi guys,

Looking for advice please.

To cut a long story short...

-Bought a 2012 ML350 BlueTech
-Had it remapped
-Engine warning light came on
-Took it back to remap company
- This is the code - 102100
- He told me this is a battery capacity issue - battery test said running at 30%
- Removed code and discussed ordering a new battery
- I drove 150miles to my parents
- Code came on again
- Local mechanic thinks, Merc need to have it
- Local mechanic said battery test said 80% ok

I can find the code online listed as - 102100 / 'Control module has an internal error' But is this a genuine battery issue or something more serious due to the remap?

Thanks guys and gals for your responses.

Dan
 

kid-jensen

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Your Mercedes
Ml320CDI 2007
Bought a battery for my ML a few months ago (Varta) for about £100 and it cured various transmission problems I'd had for months.

£100 is a pretty cheap for a diagnosis. If it fixes your problem it will also be a cheap fix.

You'll need a new battery sooner or later anyway...
 

bembo449

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Mercedes Cl500, shitron dispatch
so the car was ok before the map or did you not drive it very far before the map so the EML hadn't had chance to come on ?
 
OP
D

Daniel Smith

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ML350 Bluetech (2012 W166)
  • Thread Starter
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so the car was ok before the map or did you not drive it very far before the map so the EML hadn't had chance to come on ?

Yes it was ok before the remap. I've had new battery today and so tomorrow I'll do a long run. It normally comes on after 1hr 45mins. So a long run tomorrow to test.

Thanks,
Dan
 

Georgian N

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W221 S350cdi 2009
Not me, but i have a friend with the same problem, and no one knows what the problem is.
 
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Your Mercedes
W204 2011 c350 ed125
I'm also having this issue @ 1hr 45 , has anyone gotten to the bottom of it?
 
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W204 2011 c350 ed125
For anyone else getting this problem , provided my tuner with the symptoms and error code , he forwarded this info on to his map supplier quantum who immediately knew the problem and sent back an updated map which was re flashed , will have to wait till next long journey to see if resolved , unfortunately he didnt get the specifics of the issue with the original map so can't comment on the underlying cause , but suffice to say it wasn't 100%, but the after sales support from quantum was top notch as I only asked him yesterday!
 

alex4tuning

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2012 Mercedes Benz ML350 BlueTech
Hi I think I have the same problem with my Merc ML350.
So bough the car a few weeks ago from a used car dealership after about a week the engine management light came on.

Done a diagonistic with my Autel kit and it gave a few error codes one of which is 102100. this made the EML go on.

I started to believe based on what I read on this form that the car has probably been remapped prior to me buying it.

Did someone solve this issues? It seem to come on after about 150 miles.

Help pls.
 

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Wighty

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Sunny Essex
Your Mercedes
W211/E320cdi/2009 and CLK200k 2009
Hi I think I have the same problem with my Merc ML350.
So bough the car a few weeks ago from a used car dealership after about a week the engine management light came on.

Done a diagonistic with my Autel kit and it gave a few error codes one of which is 102100. this made the EML go on.

I started to believe based on what I read on this form that the car has probably been remapped prior to me buying it.

Did someone solve this issues? It seem to come on after about 150 miles.

Help pls.
Probably best using MB star for diagnostics or MB specific readers like icarsoft to gain some knowledge of what the fault is
 

alex4tuning

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2012 Mercedes Benz ML350 BlueTech
Probably best using MB star for diagnostics or MB specific readers like icarsoft to gain some knowledge of what the fault is
Hi the Autel software should be just as good? for every manufacturer you need to buy the software which I did for Mercedes.

Does Icarsoft gives you more in depth knowledge about the fault versus the screenshot attached?
 

Wighty

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W211/E320cdi/2009 and CLK200k 2009
I didn’t know that was MB specific fault codes :D . Over to the experts then
 
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Your Mercedes
W204 2011 c350 ed125
Mine appears to be fine since the second map was loaded , although I have only done one long trip of about the time it was taking to come on , I would suggest you take it to a reputable tuner and get them to re-map or load the standard map back on and see if it solves your problem , you autel is reading the code correctly as my xentry only picks up the same info

Regards

Nick
 

alex4tuning

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2012 Mercedes Benz ML350 BlueTech
Mine appears to be fine since the second map was loaded , although I have only done one long trip of about the time it was taking to come on , I would suggest you take it to a reputable tuner and get them to re-map or load the standard map back on and see if it solves your problem , you autel is reading the code correctly as my xentry only picks up the same info

Regards

Nick

Hi thank you for the reply, so hou say the map was the problem for you? Do you atill use Adblue or ia the function deleted (eco mode).

I would appreciate if you have some details to share about the problem or what exactly Quantum done.

I might go to them to fix this issue but would help with some details.

Thank you
 
Joined
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Your Mercedes
W204 2011 c350 ed125
Map was 100% the problem, my car never had the adblue system as it's a c class, just get someone who is good to remap again and you should fix the problem, GAD tuning are highly recommend
 

alex4tuning

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2012 Mercedes Benz ML350 BlueTech
Thank you. I was curios about Quantum as I have here in Romford a Quantum dealer.
If you recommand them I will give it a try.

I have a ML350 w166 12 plate and tought DPF has problems, but if its only the software or ECU I will probably need to get it flashed
 

Wighty

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Your Mercedes
W211/E320cdi/2009 and CLK200k 2009
Thank you. I was curios about Quantum as I have here in Romford a Quantum dealer.
If you recommand them I will give it a try.

I have a ML350 w166 12 plate and tought DPF has problems, but if its only the software or ECU I will probably need to get it flashed
Gad is only in Burnham ,Essex . That's where anyone on here would recommend
 

GAD Tuning LTD

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Essex
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www.gadtuning.co.uk
Your Mercedes
Mercedes AMG GTS - GLS350d
Thank you. I was curios about Quantum as I have here in Romford a Quantum dealer.
If you recommand them I will give it a try.

I have a ML350 w166 12 plate and tought DPF has problems, but if its only the software or ECU I will probably need to get it flashed
We would be happy to check over your calibration data and see if anything sticks out to us!

We are currently shut to public until the 9th as my wife had our second daughter so working from home! Also the week following that our new Linked AWD dyno will be installed but to check what has been done would not require the Dyno

Many thanks
 

stevebaines246

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E Class Estate
I have just bought an E350 S212. Running for 3 weeks no issues at all in that time. 3 days ago drove to the in-laws 1hr 45 mins into the journey the engine management light comes on and the car goes into limp mode. RAC called and diagnosed as below, cleared fault and indicated that it might never come on again was likely a temp fault. Drove numerous journeys over the next few days no issues. So I thought everything was okay. Then 1hr 45mins into the return journey exactly the same happens. Now waiting for RAC to see if the fault code is similar. Were the similar issues resolved with a Re-Map? and did it ever re-occur after that?
 

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