2010.5 Citroen DS4 headlamp

129Visibility
Directional lighting
When the dipped or main beam headlamps are on, this function, allows the light beams to better follow the road. The use of this function, coupled with the xenon
headlamps and the static intersection lighting, considerably improves the quality of your lighting when cornering.
This function is inactive: - when stationary or at low speeds, - when reverse is engaged.
The system is activated by default. with directional lighting
without directional lighting
Programming
The system is activated or deactivated in the vehicle configuration menu.
The state of the system stays in memory on switching off the ignition.
Contact a CITROËN dealer or a qualified workshop.
Operating fault
If a fault occurs, this warning lamp flashes in the instrument panel, accompanied by a message in the screen.

Visibility
Windscreen and headlamp
wash
 Pull the windscreen wiper stalk towards you. The windscreen wash then the windscreen wipers operate for a fixed period. The headlamp washers only operate when the dipped beam headlamps are on .
Low screenwash/headlamp wash level
The low level of this fluid is indicated by gauge in the reser voir filler neck under the bonnet. Checking and topping up this fluid can only be done when stationary with the engine off.
On vehicles fitted with headlamp washers, the driver should check the level of this fluid regularly, par ticularly during winter.
Refer to "Checks - § Screenwash/headlamp
wash level" for the procedure on checking the level.

227Checks
Petrol engines
The various caps and covers allow access for checking the levels of the various fluids and for replacing cer tain components.
1. Power steering reser voir. 2. Screenwash and headlamp wash reser voir. 3. Coolant reser voir. 4. Brake fluid reser voir. 5. Battery/Fuses. 6. Fusebox. 7. Air filter. 8. Engine oil dipstick. 9. Engine oil filler cap.

Diesel engines
The various caps and covers allow access for checking the levels of the various fluids, for replacing cer tain components and for priming the fuel system.
1. Power steering reser voir. 2. Screenwash and headlamp wash reser voir. 3. Coolant reser voir. 4. Brake fluid reser voir. 5. Battery/Fuses. 6. Fusebox. 7. Air filter. 8. Engine oil dipstick. 9. Engine oil filler cap. 10. Priming pump * . 11. Bleed screw * .
* According to engine.

Changing the coolant
The coolant does not have to be changed.
Coolant specifi cation
The coolant must conform to the manufacturer's recommendations.
Coolant level
The coolant level should be close to the "MA X" mark but should never exceed it. When the engine is warm, the temperature of the coolant is regulated by the fan. This can operate with the ignition off. On vehicles which are fitted with a par ticle
emission filter, the fan may operate after the vehicle has been switched off, even if the engine is cold.
In addition, as the cooling system is pressurised, wait at least one hour after switching off the engine before carrying out any work. To avoid any risk of scalding, unscrew the cap by two turns to allow the pressure to drop. When the pressure has dropped, remove the cap and top up the level.
Power steering fluid level
The power steering fluid level should be close to the "MA X" mark. Unscrew the cap, with the engine cold, to check the level.
To check the level or top up the fluid, immobilise the vehicle and switch of the engine.
Screenwash/headlamp
wash level

Changing a bulb
The headlamps are fitted with polycarbonate glass with a protective coating:  do not clean them using a dr y or abrasive cloth, nor with a detergent or solvent product, use a sponge and soapy water,  when using a high pressure washer on persistent marks, do not direct at the lamps or their outlines for too long, so as not to damage their protective coating and seals.
 Do not touch the bulb directly with your fingers, use lint-free cloths. Changing a bulb should only be done after the headlamp has been switched off for a few minutes (risk of serious burns). It is imperative to use only anti-ultraviolet (UV) type bulbs in order not to damage the headlamp. Always replace a failed bulb with a new bulb with the same type and specification.
Risk of electrocution
Xenon bulbs (D1S-35W) must be replaced by a CITROËN dealer or a qualified workshop.
Bulbs with lugs, type H1, H7... take care to position them correctly to ensure the best lighting.

Practical information
Front lamps
Model with xenon and directional headlamps
1. Directional dipped/main beam
headlamps (D1S-35W).2. Direction indicators (PY21W amber).3. Daytime running lamps (P21/5W XL).4. Sidelamps (LEDs).5. Foglamps (H11- 55W).
Model with halogen headlamps
1. Direction indicators (H21 clear).2. Dipped beam headlamps (H7- 55W).
3. Main beam headlamps (H1- 55W).4. Daytime running lamps (P21/5W XL).5. Sidelamps (LEDs).
6. Foglamps (H11- 55W).
Access to bulbs
Depending on the engine and only on the left hand side, you must first carry out the following operations for access to the protective covers on the bulbs.  Remove the air deflector by unclipping each of its three attachment points.  Unclip the bonnet release cable at its two fixings.  Move the cable down. After changing the failed bulb, remember to put everything back in place (cable and air deflector).

Changing dipped beam headlamp bulbs (only on models with halogen headlamps)
 Remove the protective cover by pulling on the tab.  Disconnect the bulb connector.  Spread the springs to release the bulb.  Extract the bulb and change it. To reassemble, carry out these operations in reverse order.
Changing direction indicator bulbs
When refitting, close the protective cover carefully to preser ve the sealing of the headlamp.
Amber coloured bulbs, such as the direction indicators, must be replaced with bulbs of identical specifications and colour.
Rapid flashing of the direction indicator warning lamp (right or left) indicates the failure of a bulb on that side.
Model with Xenon headlamps Remove the protective cover by pulling on its tongue.
 Disconnect the electrical connector.  Separate the springs to release the bulb.  Pull the bulb out and replace it.
To reassemble, carry out these operations in reverse order. Model with halogen headlamps Turn the bulb holder a quar ter of a turn and extract it.  Pull out the bulb and change it. To reassemble, carry out these operations in
reverse order.