Bagpuss
Member
Hi,
My 2014 PHEV has started coming up with "EV system service required" and "ACC system service required" messages.
The errors will appear either when starting the car, or on a journey, or - very occasionally - not at all. Once the messages appear, the car will no longer drive with the engine, only on electric (the motor can be fired up but it doesn't seem to actually use it and it stops again a bit later). Acceleration is much reduced. If the message appears while driving, you can hear a 'bonking' noise coming from the back of the car.
The exact same problem happened exactly a year ago. I took it to the dealer and they had it for half an hour, reset some stuff, and gave it back. They didn't charge me for it and it has been fine ever since. Now the car is back at the same garage and they tell me that Mitsubishi's guidelines say that the rear motor is at fault, but the mechanic has tested it and has a feeling that it is actually the control unit. The motor can be replaced with one from the scrapyard, but the RMCU is one-time programmable and has to be bought new. Because he is not sure exactly what is at fault, he's leaving it up to me to decide which way to go :? Obviously I am alright with paying for a job to be done if the problem is fixed (though given the age and mileage of the car I still will be wanting to ask Mitsubishi for a contribution), but I won't be happy to pay to replace a major part only to discover that it hasn't helped.
Anyone got any ideas of what I can do?
Thanks,
Dave
My 2014 PHEV has started coming up with "EV system service required" and "ACC system service required" messages.
The errors will appear either when starting the car, or on a journey, or - very occasionally - not at all. Once the messages appear, the car will no longer drive with the engine, only on electric (the motor can be fired up but it doesn't seem to actually use it and it stops again a bit later). Acceleration is much reduced. If the message appears while driving, you can hear a 'bonking' noise coming from the back of the car.
The exact same problem happened exactly a year ago. I took it to the dealer and they had it for half an hour, reset some stuff, and gave it back. They didn't charge me for it and it has been fine ever since. Now the car is back at the same garage and they tell me that Mitsubishi's guidelines say that the rear motor is at fault, but the mechanic has tested it and has a feeling that it is actually the control unit. The motor can be replaced with one from the scrapyard, but the RMCU is one-time programmable and has to be bought new. Because he is not sure exactly what is at fault, he's leaving it up to me to decide which way to go :? Obviously I am alright with paying for a job to be done if the problem is fixed (though given the age and mileage of the car I still will be wanting to ask Mitsubishi for a contribution), but I won't be happy to pay to replace a major part only to discover that it hasn't helped.
Anyone got any ideas of what I can do?
Thanks,
Dave