I have an issue where the passenger window won't go down. All others are fine. Before I'm told by the dealership that I need a new window motor, is there any other likely cause that is a known fault?

I had this last week. There is a reset procedure,

1. NOTE: After the battery has been disconnected it is necessary to initialize each door window motor separately to operate the "one-touch" up function.
• NOTE: Make sure a minimum of 2 minutes from initial disconnect of battery has elapse prior to reconnecting the battery. The initialising of the window glass motor must be conducted with the engine running.
Operate the window control switch until the door window glass is in the fully closed position, continue to operate the window control switch for a further two seconds.

2. Release the window control switch.

3. Operate the window control switch in the closed position and continue to operate the window control switch for a further two seconds.

4. Operate the window control switch until the door window glass is in the fully open position ("one-touch" down).

5. NOTE: If the door window motor initialization has been completed correctly, when the window control switch is operated, the door window glass should move to the fully closed position ("one-touch" up) automatically.
• NOTE: If the door window glass does not fully close automatically ("one-touch" up), repeat the complete procedure.
Operate the window control switch once to the close position.

6. Repeat the door window motor initialization for each door window motor. Evoque HSE Dynamic
5.0 Charger MY12

Is the same using both switches ? Can you here the motor clicking when you operate the switch ? If yes to both these questions then would suspect the window regulator rather than the motor. Strip door and investigate 2008 G4 RRSport TDV8 current
2009 TDCi 90 current
2018 Discovery 5 HSE lux current
1994 Dakar current

Hi. It's the passenger window. All other windows are fine but the passenger window will not operate by either the switch on the passenger door or the the drivers door. There is no noise or clicking though when operated.

Have you checked fuses, wouldn't expect fuses for individual Windows but who knows worth checking. After that would check to see if there is power going through the switch to the motor. 2008 G4 RRSport TDV8 current
2009 TDCi 90 current
2018 Discovery 5 HSE lux current
1994 Dakar current