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Hi,


My Smart EV 451 won't charge anymore. It has the optional 22kW charger and when I connect the car to the 22kW charging station, the display of the car says "charging malfunction". If I use the standard wall plug charger (3kW) the red light of the charger blinks. The car won't charge.

When I read the trouble codes there is a code in the 22kW charger:

P0DAA00 : “ there is an internal insulation fault in the vehicle-integrated charger”

Strange thing is that the code reader says there is a code in the 3kW charger as well, but when reading the codes it says there are no codes!

If I delete the code in the 22kW charger the car still won’t charge, but the trouble code only comes back when plugging in the 22kW charging station. Not when I connect the 3kW wall plug charger. Charging with the 3kW wall plug charger still does not work.

Where to start? Hope that someone can help.

Kind regards,

Axel
The Netherlands
 

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Mine does that also, so often that i put a 12v disconnect switch on 12v neg pole. After reconnect car charges fine

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This is just a possibility - but this could be another incident of the problem of wire and wire harness wear on the the car frame on the right rear corner of the car outboard of the spring and damper. You need to get underneath the car to inspect it. The service bulletin material is here (post no. 34):


When I had a my car serviced for an inoperable AC which was found to be due to wire harness wear, they also replaced the charging receptacle and AC cable to the on-board charger. Apparently, it was worn too. All covered by warranty, thankfully.

Also, this bulletin may be applicable:

Bulletin.jpg
 

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P0DAA00 : “ there is an internal insulation fault in the vehicle-integrated charger”
That's a well known serial error. I'm guessing it's still the 22kW-charger the smart came originally with? (Here's a manual on how you can finde it out)


Strange thing is that the code reader says there is a code in the 3kW charger as well, but when reading the codes it says there are no codes!
I've got no idea where that information comes from. But it's simply wrong. The 22kW charger ist build in the position, where the 3,7kW charger would be, if you wouldn't have the 22kW charger.

If I delete the code in the 22kW charger the car still won’t charge, but the trouble code only comes back when plugging in the 22kW charging station. Not when I connect the 3kW wall plug charger. Charging with the 3kW wall plug charger still does not work.
Yea, normally the error come from a single phase going dead. You then have a 2/3 chance of still being able to charge with up to 16A at one phase. Sadly you've got the 1/3 chance on not being able to charge anymore.


You've now got two possibilities:
  1. Your local smart dealer can replace the 22kW charger with a new one. This isn't going to have the same error again, as it's from the fixed new series. But that's going to cost you about 6.000€ .. :/
  2. You are going to remove the charger from the smart and open it. There's a good chance you'll only need to replace a capacitor and it will work again.
 
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