A customer has a problem with his new 2022-02 Vems mot55 AAN ECU (srl aan/21204)

Most likely it is at Marcus currently.

Please note: the way to get technical support is to summarize circumstances and your exact findings on THEMATICALLY editable page (not email; email is not guaranteed to arrive, not editable after sending so might contain outdated information (worse: there might be other newer versions that just waste time by having to be merged manually or might have not arrived and waste even more time or cause great confusion - a completely wrong way no matter how widely it is used), a waste of time, and not supported. Sending to arbitrary email address is especially not supported and might me neglected.

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Circumstances - PLEASE FILL

First of all, please check VemsTuneVersion, especially

* "Help/update ini files from web"

** Has that been done before "firmware upload" ?

** Use the Tools/"firmware upload" (not the "firmware upgrade wizard") if you have problems.

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What happened before ?

* please fill

What happened last, before the symptom occured?

* please fill

Symptom

When connected to VemsTune it say's:

"Boot mode detected. Please, choose an options.

* (Choose Stay for firmware upload/verify.)

Tried to install a new (???) firmware (please provide correct information. What exact firmware version?), but the vems keeps turning off

Is insert a fuse for power supply faulty?

What can i check? any idea?

What do you mean "keeps turning off" ?

* Vems cannot turn off by itself.

** ECU can be turned off by removing the 12V supply externally !

If firmware upload stops (fails midway ... after how many pages ?), it is

* most likely USB-RS232 adapter or USB-RS232 adapter windows driver problem

* RS232 connection or GND connection problem

** try with notebook running from battery, NOT powered by AC ! (that can cause communication problems)

* some problem with the +12V supply. Battery or harness problem ? Fix the harness so that the ECU gets good supply

* retry the firmware upload (possibly several times if necessary).

** If the firmware upload fails repeatedly multiple times despite good supply, good connection, perfect USB-RS232 and good windows driver, notebook running from battery, it is possible that some damage occured.

** Eg. excessive static electricity, or xray, or cosmic or other radioactive source, serious overvoltage, or short or excessive overload of outputs or other damage.

* GenBoard/Firmware/BootLoaderLoopback

can be tried especially if no "Boot mode detected" message.

** if "Boot mode detected", then already in boot mode so RS232 serial port loopback will not help.