Hi all.

I have a front windshield wiper issue on 2005 XC90

A couple of nights ago my daughter woke me up late at night during a heavy rain storm informing me that her car is all 'Lighted up'
I went out and looked at the car, all the lights were on, the windshield wipers were activated.... The key was in my hand.

I couldn't shut it down.
All I could do at the time is I disconnect the battery.

Next morning I attempted to re-connect the battery, all lights came on, all the dash lights came on as well. Including the radio was playing. Again, the ignition key was in my hand.
I started the car, it turned on.
I had no control of front windows, wipers, mirrors, sunroof, lighting or the radio.
I figured that perhaps some water went in.
I have placed a heater inside for next 12 hours. All issues went away except the front wiper still doesn't work.

I have checked ALL fuses, bumped the motor, which works fine.
I have checked the relays which work as well in my hand.

I do not get 12 volts at where the relays sit. No matter what the stalk position is.
The rear wiper works fine, so does the front and rear spray. I can also see the rain sensor light come on.
After the initial issue ALL went back to normal but the front wipers.

I haven't checked the stalk switch yet tho.

I have read on the net however, that the ECM might be damaged.

So the question are:
- Can the ECM be damaged showing only one symptom while all the other devices work?
- Is it possible to scan the ECM for damage?

or...

Any other suggestions?