U040100 ошибка мерседес

They are so specialised that the dealership only had 2 techs trained up to work on them.

Is it still under warranty?

If not it is something I would definitely take out.

I hope you get this sorted without too much expense.

Robin

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It was and maybe still is the only Hybrid diesel.

I’m not sure even the well thought of specialists can deal with these.

Robin

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Hi guys, i’ve got yet another problem with my E300 hybrid ( these things are plagued) .
When i start ignition, it stays on the electric drive and instead of switching the engine on, it stays blocked on the hybrid drive until the battery runs out and the car stops.
If i switch on the engine on the SPORT mode , the engine runs fine, but once i put it in Eco ( comfort ) mode , the engine cuts-off and stays locked on electric drive.
I went to my local garage and the only errors that caught my attention ( that might be related ) have been:
P087000 — OIL PRESSURE SENSOR ‘C’ HAS AN ELECTRICAL FAULT
P126F29 & P126F29 — THE SIGNAL ‘HOT START’ FROM THE AUTOMATIC ENGINE START/STOP SYSTEM HAS A MALFUNCTION. THE SIGNAL IS INVALID / THERE IS AN IMPLAUSIBLE SIGNAL.
U040100 — IMPLAUSIBLE DATA WERE RECEIVED FROM CONTROL UNIT ‘ COMBUSTION-ENGINE’
P008709 — THE FUEL PRESSURE IN THE SYSTEM IS TOO LOW
U041600 — IMPLAUSIBLE DATA WERE RECEIVED FROM CONTROL UNIT ‘TRACTION SYSTEM’
Thanks

Well I can proffer some suggestions based upon my earlier experiences with Toyota (Being factory trained) and the same on GMC Denali Hybrids which have the GMC Allison transmission which has been cipied by ZF or «vickey verky»—who knows!!

Clearly there is nothing wrong with the ICE in power/sport mode as I see it.
So you have communications issues in the auto hybrid drive synchronization mode.
The PCM is looking for a zero oil pressure sense so that it can determine the state of the engine—running or not!
So no comms & the unit cannot get a getaway clearance to start
Again
The hot start gateway is interrupted —basically the same problem.
Implausible data is the key—BOTH control units are not giving out the correct info to start since the traction control needs to ensure the wheel speeds are synchronized and inputted to the PCM and the PCM doesn’t know what’s going on so it won’t start in Hybrid mode—basically power unit protection.
Now to find the fault a complete knowledge of function is key! together with a factory scanner. This is not a DIY’r activity! But sensor activity/ communication and voltage on the CAN are probable causes.

As a preamble of basic understanding Toyota has to lead in this case!
Just like the MB the PCM and transmission/traction control must know what each sub component is doing to ensure smooth power flow to the wheels by the electric traction motor and ICE.
To achieve this there is an engine input via the crank sensor/oil pressure signal. Engine activity monitored .
The input motor MG1 (motor generator) which is responsible for variable drive gear operation and instant engine starts is monitored by a sine wave signal.
MG2 traction motor is monitored by a cosine wave signal output. These two signals are run through a resolver circuit to synchronize the operation of all three major elements MG1 MG2 and the ICE taking traction control inputs as a modulator .
Your problem I bet lies within these lines of communication between sensors and modules.
Can only be found I bet with a factory scanner and some product knowledge like my Toyota/ Lexus coursework/experience.
All the best
Tuercas viejas

An existing auto transmission was basically modified to accept an electrical traction motor housed in the same spare where once dwelt generally two epicyclic speed packs.

GMC Yukon models did emerge with hybrid derivatives similarly built by using the Allison transmission & 300volt nickel metal hydride battery which have done marginally better but only Ford USA who bought the rights to the Toyota Aisin system but used their own controls have been super successful with it!
For me as a shop owner only the Toyota /Lexus Hybrid has been the easiest to fix and stay fixed unlike others.
Cheers T/V

Well I can proffer some suggestions based upon my earlier experiences with Toyota (Being factory trained) and the same on GMC Denali Hybrids which have the GMC Allison transmission which has been cipied by ZF or «vickey verky»—who knows!!

Clearly there is nothing wrong with the ICE in power/sport mode as I see it.
So you have communications issues in the auto hybrid drive synchronization mode.
The PCM is looking for a zero oil pressure sense so that it can determine the state of the engine—running or not!
So no comms & the unit cannot get a getaway clearance to start
Again
The hot start gateway is interrupted —basically the same problem.
Implausible data is the key—BOTH control units are not giving out the correct info to start since the traction control needs to ensure the wheel speeds are synchronized and inputted to the PCM and the PCM doesn’t know what’s going on so it won’t start in Hybrid mode—basically power unit protection.
Now to find the fault a complete knowledge of function is key! together with a factory scanner. This is not a DIY’r activity! But sensor activity/ communication and voltage on the CAN are probable causes.

As a preamble of basic understanding Toyota has to lead in this case!
Just like the MB the PCM and transmission/traction control must know what each sub component is doing to ensure smooth power flow to the wheels by the electric traction motor and ICE.
To achieve this there is an engine input via the crank sensor/oil pressure signal. Engine activity monitored .
The input motor MG1 (motor generator) which is responsible for variable drive gear operation and instant engine starts is monitored by a sine wave signal.
MG2 traction motor is monitored by a cosine wave signal output. These two signals are run through a resolver circuit to synchronize the operation of all three major elements MG1 MG2 and the ICE taking traction control inputs as a modulator .
Your problem I bet lies within these lines of communication between sensors and modules.
Can only be found I bet with a factory scanner and some product knowledge like my Toyota/ Lexus coursework/experience.
All the best
Tuercas viejas

What?

[emoji3]

Robin

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I have had 3 of these E300H cause me trouble. The faults I have had are the hybrid battery failing, loose contacts/broken wiring to the engine ECU (there is a TIPS document concerning that) and the AC system has a leak causing the battery to overheat and shut down as it is cooled via the AC system.

Steve

QUOTE
These new hybrid drive systems are immensely complicated with multiple components found throughout the car as this related article shows. for example the lithium ion battery pack is embedded in the A/C system! http://www.google.co.uk/url?sa=t&rc…8oGACg&usg=AFQjCNEEqIjke0vo_tdI6pmcw2JRxe-9jg
Under these circumstances it might be argued that in parallel to the introduction of this new technology Mercedes need to implement a different strategy to the repair of these vehicles in the event of them developing a fault early in their life. In the rare event of a major powertrain problem occurring early in a hybrid vehicle’s life the only effective solution to maintain adequate customer satisfaction might be to give them another car and return the faulty one to the manufacturing facility?
New technology may dictate new repair/replacement strategies.

Since a new «starter motor» and flywheel essentially describes the entire hybrid drive system the cost would be eye watering. Afaik in Sport mode the hybrid drive system is effectively not used so this may be your only option to continue using your car without throwing lots of money at it with only a 50/50 chance of effecting a repair.

Proper diagnostic has been done.
Starter motor needs replacing ( altough it works ), cost of part is 430 / cost of labour at dealership is 640 for 4 1/2 hrs of labour. Bloody extortion that is !

Hi how did you manage to get along with your vehicle ? Did you find the root cause of the issue. Unfortunately im having the exact same issue with the car and mercedes cannot figure out what it is !

..you cannot fix this car unless you go to main dealers……..

Sorry to hear about your troubles.

I would take it as a given that a hybrid car (all marques, not just MB) needs to be repaired at the dealer.

Traditionally, the primary reason that buyers purchased new hybrid cars was the very low (or nil) BIK.

In that scenario, the car is being purchased with finance and replaced after 2 or 3 years.

The first owner will therefore have no issue with the cost of dealer repairs, because the car will still be covered by the manufacture’s warranty during the finance or lease period.

It’s down to the second owner, who buys the car second hand, to consider that hybrid cars are complex and many of the potential issues will require dealer attention.

The exception perhpas is Toyota/Lexus, where thanks to their near-Legendary reliability second hand buyers are unlikely to experience major issues.

Sorry to hear about your troubles.

I would take it as a given that a hybrid car (all marques, not just MB) needs to be repaired at the dealer.

Traditionally, the primary reason that buyers purchased new hybrid cars was the very low (or nil) BIK.

In that scenario, the car is being purchased with finance and replaced after 2 or 3 years.

The first owner will therefore have no issue with the cost of dealer repairs, because the car will still be covered by the manufacture’s warranty during the finance or lease period.

It’s down to the second owner, who buys the car second hand, to consider that hybrid cars are complex and many of the potential issues will require dealer attention.

The exception perhpas is Toyota/Lexus, where thanks to their near-Legendary reliability second hand buyers are unlikely to experience major issues.

Sounds about right I fall into the second owner but am glad i have got rid of it I am at peace now