timb138
New Member
- Joined
- Jun 10, 2013
- Messages
- 5
- Reaction score
- 0
- Location
- Guildford
- Your Mercedes
- a-class / 08 / 1.5 petrol
Hi All.
Can anyone please help with my current dilemma.
I bought an 08 A-class 1.5 petrol with 40K on the clock 6 months ago from a well known giant car supermarket, it has the later type siemens VDO ECU (the one without the air flow meter) part numbers are a2661530391, 5wk90974 (07), a2204463140 (but according to merc parts the correct replacement ecu is a2204463340 and they have no record of the part number currently fitted on their system).
Last month the car started stalling when approaching junctions etc and sometimes would restart ok, other times I`d have to wait up to half an hour.
My local merc dealer in guildford has diagnosed a ROM failure in the ecu, error code P0605 and have quoted almost £2k for a new unit and programming but eventually agreed to recode a used one to the car for £120 /hr without any guarantee on the work.
Anyway after sending the original to ecutesting for a second opinion they confirmed the ecu ROM was at fault but couldn't fix it and sent it back.
I got an identical ecu from a used spares place and gave it to the merc dealer who after trying to programme it said it needed to have the donor car data removed from it first.
I have contacted every ecu specialist i can find and some say they cant fix it, others say they can't transfer the data from the original rom as the defect would be transferred to the new unit, some say they need the blank data from a new unit to programme onto it and one says it will be fine and they can copy it across. Another ecu remanufacturer has one for £500 which apparently can be programmed via the OBDII port but when I quizzed them their units aren't virgin either and also have the donor cars data on them.
So are Mercedes being difficult by stating they cant wipe it or does every one have to go for the new merc item?
Can anyone confirm if the ROM failure is likely to be a software fault in the ecu which would be transferred, A chip failure so the data should be fine etc.
If it is just a software problem on the original unit, can't the original be reprogrammed by the dealership?
Any other suggestions to get the car back on the road? I have thought about getting all the coded parts from a single donor but so far I haven't found one and am not sure if it would work in any case.
BTW We were however offered a reduction of 4% on the cost of the new ecu by mercedes due to the cars low mileage and it only being 5 years old.
Any help would be greatly appreciated as there is no way I can raise £2k at the moment.
Can anyone please help with my current dilemma.
I bought an 08 A-class 1.5 petrol with 40K on the clock 6 months ago from a well known giant car supermarket, it has the later type siemens VDO ECU (the one without the air flow meter) part numbers are a2661530391, 5wk90974 (07), a2204463140 (but according to merc parts the correct replacement ecu is a2204463340 and they have no record of the part number currently fitted on their system).
Last month the car started stalling when approaching junctions etc and sometimes would restart ok, other times I`d have to wait up to half an hour.
My local merc dealer in guildford has diagnosed a ROM failure in the ecu, error code P0605 and have quoted almost £2k for a new unit and programming but eventually agreed to recode a used one to the car for £120 /hr without any guarantee on the work.
Anyway after sending the original to ecutesting for a second opinion they confirmed the ecu ROM was at fault but couldn't fix it and sent it back.
I got an identical ecu from a used spares place and gave it to the merc dealer who after trying to programme it said it needed to have the donor car data removed from it first.
I have contacted every ecu specialist i can find and some say they cant fix it, others say they can't transfer the data from the original rom as the defect would be transferred to the new unit, some say they need the blank data from a new unit to programme onto it and one says it will be fine and they can copy it across. Another ecu remanufacturer has one for £500 which apparently can be programmed via the OBDII port but when I quizzed them their units aren't virgin either and also have the donor cars data on them.
So are Mercedes being difficult by stating they cant wipe it or does every one have to go for the new merc item?
Can anyone confirm if the ROM failure is likely to be a software fault in the ecu which would be transferred, A chip failure so the data should be fine etc.
If it is just a software problem on the original unit, can't the original be reprogrammed by the dealership?
Any other suggestions to get the car back on the road? I have thought about getting all the coded parts from a single donor but so far I haven't found one and am not sure if it would work in any case.
BTW We were however offered a reduction of 4% on the cost of the new ecu by mercedes due to the cars low mileage and it only being 5 years old.
Any help would be greatly appreciated as there is no way I can raise £2k at the moment.