See also:

Replacing bulbs
...

Ambience lighting
The dimmed passenger compartment lighting improves visibility in the vehicle when the light is poor. ...

Diesel engines HDi 110 - HDi 138 (with particle filter)
1. Screen wash and headlamp wash reservoir. 2. Power steering fluid or power steering and suspension fluid reservoir. 3. Engine coolant reservoir. 4. Engine oil gauge. 5. Engine oil topping-up. ...