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old age,mines says drivers door always open.checked all connections and all were ok
Well if it's just saying that door you most likely have a switch problem rather than a problem with the actual graphic display, so check the switch for the respective door.
The control box is not next to the engine ECU, they are behind the kick trims in each footwell the drivers one is the bulb outage monitor and the actual control unit is in the passenger footwell or vice versa as I am going from memory, this is 2WD but think 4x4 would be much the same. Eliminate all connection issues before buying looking at the actual control units themselves!