Thread: M and S lights again

Just an FYI, not so much help to resolve your issue.

I sometimes get M&S on my D2, and randomly ..

Last time I actually remembered what and why it happened.
I pulled up in my driveway and turned engine off, but then switched ign(only) back on to lift windows up(I had door opened).
May have been maybe 5 sec with key off and back on. At that point battery was charged due to a min half hour drive... so not a low battery issue there.

At that time couldn't be bothered to check it with nanocom(why M&S on), and I thought check it tomorrow.

Then it's tomorrow ... and M&S lights gone.

Not long after I bought Mine, it was doing the same thing. I had bought it from a dealer so I took it back to be fixed. they told me they had to re-solder a wire that had come loose somewhere on top of the transmission. whatever it was, it fixed the problem.

Adarewyr,

Most likely the contacts for the relays are starting to age and cause poor connections, simply removing and reseating will briefly fix the issue but not cure it.

AK83,

You most likely had a CAN timeout fault, code P1843. This will be because the 2 controllers have lost communication because of the quick ignition cycling getting comms out of sync, I'm not sure if the controllers continue to try and communicate with each other after this, but once the code is thrown you get M & S and it goes into limp mode until restarted.

Turning the ignition off for several seconds and then restarting will fix it, but the fault will still be logged.

Sharmy,

The autobox wiring loom runs over the top of the auto and actually lays on the top of the box. Over a couple hundred thousand km of vibration, the shielding wears through and will cut one or more wires.