ECU went bad
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09E350, 07E63, 13CLS63
ECU went bad
A friend of mine has problem to start the car. The steering and transmission are locked. The tech told him that his ECU is bad and he will need a different one. If he buy an used one off Ebay, does it need to reprogram at the dealer or just plug and play? Anyone know. It's stock, not performance ECU of anything like that. Thanks.
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2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
Question is - why did it go bad? Oil in the wiring harness? If so... new ecu will go bad too
yes you can get eBay ecu and tuner can clone it; dealer likely will not do this for you, they will sell you a new one
yes you can get eBay ecu and tuner can clone it; dealer likely will not do this for you, they will sell you a new one
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'14 E63S, '00 E430, '07 C230
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2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
Ams in west chicago can do this for you
also Eurocharged Austin Texas
and still .... check for oil in harness even if e350
also Eurocharged Austin Texas
and still .... check for oil in harness even if e350
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2019 M5 Comp, 2005 Ariel Atom 2
I'll just throw this out there, we had the transmission lock out of our GL (722.9 transmission) and it turned out to be a bad battery. I would think they checked that, but you never know! ECUs don't go bad very often in my experience... best of luck!
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2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
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From: USA
09E350, 07E63, 13CLS63
We bought an used ECU with same part number on eBay, sent both in for clone service also on eBay. We received the ECU back today, plugged it in but it didn't work. Got error code 1405 ECU cannot communicate with transmission over CAN bus. Something wrong with transmission but not the ECU?
Last edited by dustinN; Sep 18, 2022 at 12:11 AM.
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2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
We bought an used ECU with same part number on eBay, sent both in for clone service also on eBay. We received the ECU back today, pugged it in but it didn't work. Got error code 1405 ECU cannot communicate with transmission over CAN bus. Something wrong with transmission but not the ECU?
Last edited by PeterUbers; Sep 12, 2022 at 09:14 PM.
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09E350, 07E63, 13CLS63
I don't know. Some people had similar problem and resolved by replaceing the ECU. I'm going to replace the TCU next. I guess I would do the same as I did with the ECU? Buy a used TCU and clone the data?
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2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
Try a tcu reset first; did someone install a battery with the wrong polarity?
Last edited by PeterUbers; Sep 18, 2022 at 12:40 AM.
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09E350, 07E63, 13CLS63
I will search for TCU reset. It's not a battery from Mercedes and it was installed over a year ago. Everything woked just fine until now. Thank you for your help.
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2019 M5 Comp, 2005 Ariel Atom 2
TCUs should be interchangeable in the W211 unless it changed after 2006? So I don't think they require cloning. Don't the shifter assemblies go bad in these? I had mine for years and never ran into a problem, but if you needed to 'unlock' the shifter maybe that's the issue. I'd look around the W211 forums.
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09E350, 07E63, 13CLS63
TCUs should be interchangeable in the W211 unless it changed after 2006? So I don't think they require cloning. Don't the shifter assemblies go bad in these? I had mine for years and never ran into a problem, but if you needed to 'unlock' the shifter maybe that's the issue. I'd look around the W211 forums.
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2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
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Mercedes won't replace just the TCU/TCM. They want to replace the whole valve body/conduct plate, part # A220270270687. This item is considered a theft relevant part and is not available for purchase online. The cost is $1,268, plus the cost to reprogram, and around 4-hr labor, and full transmission service (around $500) for the total around 3k. I'm think of buying a used TCU on eBay and DIY. I already asked Joe (Valvestud) for instruction to install it. If I can't do this myself, maybe an indy can do it for less.
P.S. Does anyone know the correct part# for the TCU?
P.S. Does anyone know the correct part# for the TCU?
Last edited by dustinN; Sep 22, 2022 at 01:06 PM.
Out Of Control!!
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2014 E63S; AMS 100 octane ECU dyno tune; EDOK TCU tune; BB intakes; sprintbooster
Mercedes won't replace just the TCU/TCM. They want to replace the whole valve body/conduct plate, part # A220270270687. This item is considered a theft relevant part and is not available for purchase online. The cost is $1,268, plus the cost to reprogram, and around 4-hr labor, and full transmission service (around $500) for the total around 3k. I'm think of buying a used TCU on eBay and DIY. I already asked Joe (Valvestud) for instruction to install it. If I can't do this myself, maybe an indy can do it for less.
P.S. Does anyone know the correct part# for the TCU?
P.S. Does anyone know the correct part# for the TCU?
your issues is probably the valve body it's a common issue for 722.9... but if it's not cost prohibitive and you can do it I guess it's reasonable to replace the tcu though I've never read much on people doing this ... it won't be easy I don't think presuming 722.9 trans
https://mbworld.org/forums/c-class-w...-replaced.html
Last edited by PeterUbers; Sep 22, 2022 at 05:03 PM.
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[QUOTE=dustinN;8639321]Mercedes won't replace just the TCU/TCM. They want to replace the whole valve body/conduct plate, part # A220270270687. This item is considered a theft relevant part and is not available for purchase online. The cost is $1,268, plus the cost to reprogram, and around 4-hr labor, and full transmission service (around $500) for the total around 3k. I'm think of buying a used TCU on eBay and DIY. I already asked Joe (Valvestud) for instruction to install it. If I can't do this myself, maybe an indy can do it for less.
P.S. Does anyone know the correct part# for the TCU?[/QU
A0002702600
A 000 270 00A 000 270 26 00
P.S. Does anyone know the correct part# for the TCU?[/QU
A0002702600
A 000 270 00A 000 270 26 00
