Hi Al,
Thanks for the super detailed reply! I had already read about your LDU reman efforts before even buying my Mercedes.
I've already asked the B class owner from the Netherlands whether his fix is possible without removing the motor and he confirmed it is.

I'm just wondering whether I should ...

Sorry to pull this old thread up... But is this really the battery from the W447 eVito? Amazon and the Dutch post office seem to be getting rid of them, I saw some for 5 or 6000 euros. Wouldn't those make great donors for a conversion?

Does anyone know what motor/battery they have?

Hi, I've just successfully completed a battery swap on my Mercedes B250 and need to delete the coolant on the LDU now. There are just so many different solutions out there that I'm kind of paralyzed about which one to choose.

There is a very faint whining noise (maybe comparable to a laser from ...

I replaced the HV battery - it dont need programming .


Hey! Sorry I didn't reply earlier, I hadn't enabled e-mail notifications for this forum and didn't see your post until I found my own thread on google. Totally forgot about it.

I finally gathered the courage to swap my batteries solely ...

You can also swap LDU, and replace immobiliser from original LDU...
Most of the time moisture/glycol in immobiliser connectors


I'd prefer to switch the batteries because the car with the batery issues is in much better condition than the one with the flooded LDU.

It's just really difficult to ...

No, unfortunately not, but I didn't have time to continue looking into it yet.
I'm still trying to figure out how to switch the batteries from one car to another without a lift, to see whether they just work without having to reprogram the BMS ECU.

Hi everyone,

I'm looking to find some information for my project which is not Openinverter specific, but it seems like this forum is the place with the highest concentration of Mercedes B250e knowledge.

I've recently bought two Mercedes B250 Electric Drive with different issues:

No. 1 has a ...