Main beam switching

[UkFoxy]

When i put the dip lights on the off side on takes longer to illuminate..also when one goes instantly to full beam & when I operate the stalk to full beam the other light goes to full beam whilst the other one goes back to dip!...

ALSO when I put the ignition on the washer bottle motor goes to live instantly!!!

[sierrafery]

Seems like the MFU is playing up(supposing it's a D1)... u can run a test for it :

Close all doors and the tailgate. NOTE: If the oil pressure switch goes open circuit (engine is started) during the following procedure, the MFU will exit the diagnostic mode immediately.

Press and hold the heated rear screen switch and switch on the ignition.

Release the heated rear screen switch within 2 seconds and the MFU will beep to indicate that it's in diagnostic mode 1.

Press the heated rear screen switch; the MFU will beep twice. In turn, operate each of the following switches, heated front screen, rear fog guard lamps, side lights, headlights, front wiper, and rear wiper. The MFU will beep twice each time a switch is operated.

Pressing the heated rear screen again will cause the MFU to enter diagnostic mode 2.

The MFU will provide outputs to the following in order given below:

Heated rear screen relay energized for 2 seconds

Heated front screen energized for 2 seconds

Courtesy lights energized for 2 seconds

Dim dip relay energized for 2 seconds

Rear fog guard lamp energized for 2 seconds

Headlamp power wash energized for half a second

Front wiper energized for half a second

Rear wipe/wash energized for half a second

The MFU will then exit the diagnostic mode.

If the test fails INO u need a new MFU(multi function unit), is mounted on the rear of the passenger compartment fusebox and has an input to operation of the following:

Heated rear screen

Heated front screen

Courtesy lights

Side and headlights

Rear fog guard lamps

Headlamp power wash

Front wipers

Rear wash/wipe