Fault code is U012087

[jam1es38]

Help needed please,
My 2013 E220cdi keeps showing this fault code.
It is having much problem starting first time in the day, if it is cold outside then it might have starting problems all thru that day.
Upon sitting in the car to start i watch for the heater lights to go off, then i turn the key.
NOTHING HAPPENS, the lights in dash do not dim at all.
I can turn the key many times, most times when it does start it is as the key is on the return ( disengaging from the full start position)
The above fault code is the same from MB dealer ship as with the AA
Sometimes i get the attached message showing on my dash
Thanks from Michael

 

[Blobcat]

Hello and welcome,

First things first, what's your battery like? less than 12.4v at rest with engine off denotes it needs charging / replacing.

 

[Dean Fletcher]

Battery or alternator?

 

[jam1es38]

Hello and welcome,

First things first, what's your battery like? less than 12.4v at rest with engine off denotes it needs charging / replacing.

Battery is less than 6 months old, NOT a cheap battery

 

[jam1es38]

Hello and welcome,

First things first, what's your battery like? less than 12.4v at rest with engine off denotes it needs charging / replacing.

The MB dealer did a test shows battery at 12.42v

 

[mioba]

if you had the car diagnosed at the dealer ( The above fault code is the same from MB dealer ship as with the AA) what did they say it was and the cost to rectify.

never known a dealership to just give a customer a fault code and not say what it is.....

 

[Dean Fletcher]

Isn’t fault u012087 something to do with communication between the battery and alternator?

 

[mioba]

who knows thats why i asked, mb dont throw codes over the fence

 

[jam1es38]

if you had the car diagnosed at the dealer ( The above fault code is the same from MB dealer ship as with the AA) what did they say it was and the cost to rectify.

never known a dealership to just give a customer a fault code and not say what it is.....

The dealer says they want to have my car for about a week maybe longer, so they can check it out to find out why it gives this code, no mention about cost.

 

[jam1es38]

Help needed please,
My 2013 E220cdi keeps showing this fault code.
It is having much problem starting first time in the day, if it is cold outside then it might have starting problems all thru that day.
Upon sitting in the car to start i watch for the heater lights to go off, then i turn the key.
NOTHING HAPPENS, the lights in dash do not dim at all.
I can turn the key many times, most times when it does start it is as the key is on the return ( disengaging from the full start position)
The above fault code is the same from MB dealer ship as with the AA
Sometimes i get the attached message showing on my dash
Thanks from Michael

The dealer says they want to have my car for about a week maybe longer, so they can check it out to find out why it gives this code, no mention about cost.

It says on print out that U012087 is communication between the starter or alternator has a malfunction

 

[jam1es38]

who knows thats why i asked, mb dont throw codes over the fence

It says on print out that U012087 is communication between the starter or alternator has a malfunction

 

[jam1es38]

Isn’t fault u012087 something to do with communication between the battery and alternator?

It says on print out that U012087 is communication between the starter or alternator has a malfunction

 

[Craiglxviii]

Help needed please,
My 2013 E220cdi keeps showing this fault code.
It is having much problem starting first time in the day, if it is cold outside then it might have starting problems all thru that day.
Upon sitting in the car to start i watch for the heater lights to go off, then i turn the key.
NOTHING HAPPENS, the lights in dash do not dim at all.
I can turn the key many times, most times when it does start it is as the key is on the return ( disengaging from the full start position)
The above fault code is the same from MB dealer ship as with the AA
Sometimes i get the attached message showing on my dash
Thanks from Michael

As the car is 9yo and out of warranty, why not take it to a recommended local Indy who will do you a better job than main stealer?

 

[jam1es38]

As the car is 9yo and out of warranty, why not take it to a recommended local Indy who will do you a better job than main stealer?

Any suggestions - I live near to Coventry

 

[Craiglxviii]

Any suggestions - I live near to Coventry

Mercland in Nuneaton

 

[jam1es38]

Mercland in Nuneaton

I have booked in there this afternoon for tomorrow -- Thanks

 

[rickos]

Battery or alternator?

HI THERE HOW DID YOU MANAGE TO FIX THE ERROR u012087 ON THE MERCEDES THANK YOU

 

[rickos]

Isn’t fault u012087 something to do with communication between the battery and alternator?

HI THERE HOW DID YOU MANAGE TO FIX THE ERROR u012087 ON THE MERCEDES THANK YOU

 

[Dean Fletcher]

HI THERE HOW DID YOU MANAGE TO FIX THE ERROR u012087 ON THE MERCEDES THANK YOU

What the fault on your car?

 

[rickos]

What the fault on your car?

My code Error is U012087