XC70: Electrical Replacing Headlamp Units.w

[Ian21401]

Bottom line is that front suspension level sensor and right side headlamp control unit require replacement.
Two service technicians, one of whom appeared to be senior to the other, brought the complete headlamp unit into the waiting area to show me.
The apparent senior of the two advised that the diagnostic check had revealed faults with the level sensor and the control unit and he had cleared all fault codes.
I mentioned the slight squeak from the front suspension reported by my daughter. He stated that he had heard the squeak whilst driving the car onto the inspection ramp and believed it to be from the level sensor. He had checked the sensor and found that the voltage output to the Central Headlamp Control Unit was fixed instead of varying with the movement of the sensor so the sensor needed to be replaced.
He then moved onto the headlamp’s own control unit stating that there was corrosion on the pins of the multi plug on the body of the control unit.
( see 3rd and 4th images within post #16 ) and showed me the control unit which did indeed have some signs of corrosion at the base of some of the pins.
He suggested that this corrosion had been caused by moisture entering the body of the headlamp and this was also the reason for the build up of condensation on the inside of the headlamp lens. He suggested that the moisture ingress was because the rear cover of the headlamp unit had not been correctly fitted. He also advised that the wiring to the levelling motor was wrongly routed.
I replied that whilst I accepted that the level sensor had failed ( probably just due to fair wear and tear ) I was not accepting responsibility for the badly fitted back cover or the wrongly routed levelling motor wiring as the last people to work on that headlamp were the dealer’s own technicians and it was they who had identified that the levelling motor operating rod had not been correctly installed and corrected it and it may have been during that procedure that the wiring had been wrongly routed.
They returned to the workshop with the headlamp unit and the apparently junior technician later returned to return the car keys to me.
He advised that the required parts would be ordered and I would be contacted when they arrived.
I informed him that whilst I accepted the cost of the sensor I was not happy regarding the cost of the control unit as I had not interfered with the headlamp since their technician had worked on it and suggested that we may be able to come to some agreement regarding the total cost of the repairs. He replied that he would need to refer that to the service manager.
So I am awaiting the phone call.

[MKY73]

The required parts, sensor etc were bought by us and were fitted when the car went in for its 12yr service.

Separate but not separate to this thread.

I don’t know if my dad Ian21401 will post again as right now we’ve been given some very bad news about his health. I can’t quite believe that I’m having to write this as at the beginning of December he was out working on his own 940.