• The Forums are now open to new registrations, adverts are also being de-tuned.

What is the warranty period on a MB battery

I've already checked that with an auto electrican and so has the Mobilio-Life technician. The drain during normal running and when "asleep" is within normal operating parameters.

OK fair do's.
Is there any way you can show your Stealer the findings from these tests? i.e. did the mobilo guy give you any paperwork showing the tests he did and the conclusion he came to?
That might force your Stealer to just fit a new battery rather than waste time with the over night test.

Alternatively, can't the Stealer get in touch with Mobilo and obtain details of your Mobilo visit?
 
I handed the Mobilio-Life report to me dealer. They still insisted on conducting their own tests. Not only is it costing them money for labour to investigate a fault that has already been investigated, at their cost, I have now the extra costs of taxis etc. to consider.
 
I cant get 2 weeks left and locked from my SL,,nearer10 days and consumers on

This was only 24 hours. The day prior to that involved a 160 mile return journey. As the alternator is working fine that should result in a fully charged battery.
 
With the latest generation of battery tester, using one of those would have been a cheaper alternative for both parties concerned
 
I handed the Mobilio-Life report to me dealer. They still insisted on conducting their own tests. Not only is it costing them money for labour to investigate a fault that has already been investigated, at their cost, I have now the extra costs of taxis etc. to consider.

I guess they are trying to 'find' :rolleyes: a fault so they can say the battery is fine but there is an electrical problem causing the drain.

"Unfortunately the Mobilo technician only has access to limited facilities on his van whereas we at the Dealership were able to run a FULL test and have concluded that your what not is drawing power from the thingamee and this has now damaged your battery beyond repair. You will need a new battery at 135 pounds, plus six hours labour for us to come up with this bulls**t" :devil:

Then, once you've paid them and are driving away, they chant (as if at a football match):

"THAT'S WHY WE'RE STEALERSHIPS!!"
"THAT'S WHY WE'RE STEALERSHIPS!!"
"THAT'S WHY WE'RE STEALERSHIPS!!"
"THAT'S WHY WE'RE STEALERSHIPS!!"

Sorry, but I just REALLY hate those guys!! :mad:
 
Last edited:
I guess they are trying to 'find' :rolleyes: a fault so they can say the battery is fine but there is an electrical problem causing the drain.

"Unfortunately the Mobilo technician only has access to limited facilities on his van whereas we at the Dealership were able to run a FULL test and have concluded that your what not is drawing power from the thingamee and this has now damaged your battery beyond repair. You will need a new battery at 135 pounds, plus six hours labour for us to come up this bulls**t" :devil:

You've voiced my hitherto unspoken fears. They will have a fight on their hands if they try this.
 
You've voiced my hitherto unspoken fears. They will have a fight on their hands if they try this.

Good on ya!!

I suppose you're ok though as they say they're doing the 'over night test' at their expense.

But they could have given you a loan car or at least offer to run you home/pick you up if you have access to another car at home?
 
Just had a call. A day of testing has shown the same result the Mobilio guy came up with, the battery tester keeps saying "Charge and Retest".

So they want to keep it in overnight to fully charge it. I don't think this will prove anything as I had done a 160 mile run just two days before it went flat. If that didn't fully charge it nothing will.

More worrying is that they have seen the retrun of the qurter amp drain I saw at Christmas, the last time this happened. Obviously the drain is intermittent as the car has been left for up to five days since Christmas with no drain and a test by an auto electrician showed no drain, so that's even more worrying.
 
On the subject of batteries..
1. How do you remove the batt from a ML 270 ( 2004 )?
2. Does it cause any problems to have the power removed for a couple of minutes whilst you swop it with the new one ( on board Command system , ecu's and the like ) ?
 
I came unstuck on this badly and I should have known better , after my car had been standing for 2 weeks the rear AGM battery was down to 7.5 volts,, a current check showed 250m/a,, I went looking and there was no fault,, all it was, was that nothing could re set and was stuck, so everything struggling.

Upon charging the battery there was no fault.

Basic rule number one in everything that I have repaired in my life === power supply,, in this case the battery was low and nothing else.

once batteries get down to 11.75 volt this is the point where consumers get switched off the fall is rapid and in the case of a AGM battery it takes 12 hours at 6 amps to get it back up
 
I came unstuck on this badly and I should have known better , after my car had been standing for 2 weeks the rear AGM battery was down to 7.5 volts,, a current check showed 250m/a,, I went looking and there was no fault,, all it was, was that nothing could re set and was stuck, so everything struggling.

Upon charging the battery there was no fault.

Basic rule number one in everything that I have repaired in my life === power supply,, in this case the battery was low and nothing else.

once batteries get down to 11.75 volt this is the point where consumers get switched off the fall is rapid and in the case of a AGM battery it takes 12 hours at 6 amps to get it back up

Interesting. The battery was down to 12 volts. It came back to life with a battery booster.
 
Just adding some info that goes against Ohms law, when the battery is lowish, the starter motor will draw excess amps to compensate as it trys to crank the engine,,, many manufactures are now rejecting starter motors that have been returned under guarantee if the thrust washers and shafts have turned blue
 
I have a 2005 W211 displaying battery fault and telling me to visit workshop even though it a new battery I just bought for £140 and I cannot reset this display. I took it to stealer a number of times and finally they diagnosed it a wiring fault.

Am I right to say that the stealer not seeing a battery not bought from them will invalidate your 3 years warranty?:confused:
 
I have a 2005 W211 displaying battery fault and telling me to visit workshop even though it a new battery I just bought for £140 and I cannot reset this display. I took it to stealer a number of times and finally they diagnosed it a wiring fault.

Am I right to say that the stealer not seeing a battery not bought from them will invalidate your 3 years warranty?:confused:

That cannot really be so as the battery is a consumer item
 
Update: 10:30 11th April. Dealer just phoned me to say they have spent 6 hours diagnosing the battery drain and identified as one of two SAM units. Now need to find out which electrical control unit running through that SAM is causing the drain.

They said, as my MB is over 6 years old there is a discount of £40 an hour on labour, making their labour charge £80 + VAT and an unspecified discount on parts.

I responded that I had not authorised 6 hours of investigation and, if they had rung me to say they wanted to do that I would have said no as I can take it to an independent to diagnose the fault at £45 an hour, not £80. They have admitted they should have got my permission and promised to come back to me on the number of hours charged.

I'm quietly fuming at the moment...
 
Update: 10:30 11th April. Dealer just phoned me to say they have spent 6 hours diagnosing the battery drain and identified as one of two SAM units. Now need to find out which electrical control unit running through that SAM is causing the drain.

They said, as my MB is over 6 years old there is a discount of £40 an hour on labour, making their labour charge £80 + VAT and an unspecified discount on parts.

I responded that I had not authorised 6 hours of investigation and, if they had rung me to say they wanted to do that I would have said no as I can take it to an independent to diagnose the fault at £45 an hour, not £80. They have admitted they should have got my permission and promised to come back to me on the number of hours charged.

I'm quietly fuming at the moment...

I am lost for words on this :mad:
 
Forgot to say they phoned me yesterday to say the battery was fully charged after an overnight charge but there was this quarter amp drain. I said then I did not want them to spend any time searching for a fault that may or may not exist.
 
Update: 10:30 11th April. Dealer just phoned me to say they have spent 6 hours diagnosing the battery drain and identified as one of two SAM units. Now need to find out which electrical control unit running through that SAM is causing the drain.

They said, as my MB is over 6 years old there is a discount of £40 an hour on labour, making their labour charge £80 + VAT and an unspecified discount on parts.

I responded that I had not authorised 6 hours of investigation and, if they had rung me to say they wanted to do that I would have said no as I can take it to an independent to diagnose the fault at £45 an hour, not £80. They have admitted they should have got my permission and promised to come back to me on the number of hours charged.

I'm quietly fuming at the moment...

Now that sounds familiar !!!! You should see the arguement I am having with the dealer at the moment regarding the time it has taken for them to diagnose a fault in the cooling system !!!!!!

Their arguement is that these things take time and as an example they have a car in that they have been working on for a week on a battery drain problem !!!!!

I'd hate to be the guy that gets the diagnosis bill for that !!!!

My conclusion regarding the main dealer - Unless the Star diagnosis can tell them whats going on, they havn't got a clue !!!!!
 

Users who are viewing this thread

Back
Top Bottom