2010.5 Citroen DS4 DAG brake

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.

229Checks
Checking levels
Check all of these levels regularly and top them up if necessary, unless other wise indicated. If a level drops significantly, have the corresponding system checked by a CITROËN dealer or a qualified wo rkshop.
Oil level
Engine oil change
Refer to the Maintenance and Warranty Guide for the inter val for this operation.
In order to maintain the reliability of the engine and emission control system, the use of additives in the engine oil is prohibited.
Oil specifi cation
The oil must correspond to your engine and conform to the manufacturer's recommendations.
Brake fluid level
Changing the fl uid
Refer to the Maintenance and Warranty Guide for the inter val for this operation.
Fluid specifi cation
The brake fluid must conform to the manufacturer's recommendations and meet the DOT4 standard.
The brake fluid level should be close to the "MA X" mark. If it is not, check the brake pad wear.
The reading will only be correct if the vehicle is on level ground and the engine has been off for more than30 minutes. The check is carried out either when the ignition is switched on using the oil level indicator in the instrument panel, or using the dipstick.
When working under the bonnet, take care, as cer tain areas of the engine may be extremely hot (risk of burns).

Electric parking brake
This system does not require any routine ser vicing. However, in the event of a problem, have the system checked by a CITROËN dealer or a qualified workshop. For more information, see "Driving - Electric parking brake - § Operating faults".
Only use products recommended by CITROËN or products of equivalent quality and specification. In order to optimise the operation of units as impor tant as the braking system, CITROËN selects and offers very specific products. To avoid damaging the electrical units, the use of a high pressure washer in the engine compar tment is strictly prohibited . Brake disc wear
For information on checking brake disc wear, contact a CITROËN dealer or a qualified workshop.
Manual parking brake
If a loss of effectiveness of this system is noticed, the parking brake must be checked, even between two ser vices. Checking this system must be done by a CITROËN dealer or a qualified workshop.
Brake pads
Brake wear depends on the style of driving, par ticularly in the case of vehicles used in town, over shor t distances. It may be necessary to have the condition of the brakes checked, even between vehicle ser vices. Unless there is a leak in the system, a drop in the brake fluid level indicates that the brake pads are worn.

Removing a wheel
Parking the vehicle
Immobilise the vehicle where it does not block traffic: the ground must be level, stable and non-slippery ground. Apply the parking brake unless it has been programmed to automatic mode, switch off the ignition and engage first gear * to lock the wheels. Check that the braking warning lamps in the instrument panel are on (not flashing). If necessary, place a chock under the wheel diagonally opposite the wheel to be changed. The occupants must get out of the vehicle and wait where they are safe. Never go underneath a vehicle raised using a jack; use an axle stand.
List of operations
 Remove the chromed bolt cover from each of the bolts using the tool 3 (according to
equipment).  Fit the security socket 4 on the wheelbrace 1 to slacken the security bolt.
 Slacken the other bolts using the wheelbrace 1 only.
* position R for the electronic gearbox system.

255Practical information
1. Brake lamps (P21/5W).2. Sidelamps (LEDs).3. Direction indicators (PY21W amber)4. Reversing lamp (P21W).
5. Rear foglamps (P21W).
Rear lamps
Amber bulbs, such as those for the
direction indicators, must be replaced by bulbs of the same rating and colour. The lamps on the tailgate, other than
the guide lamps, are dummy units. They are there for aesthetic purposes only.
Changing stop lamp, reversing lamp and direction indicator bulbs
These three bulbs are changed from inside the boot:
 open the boot,  remove the access grille from the
corresponding side trim panel,  slacken the two nuts using a 10 mm tube
spanner then remove the nuts by hand,  unclip the lamp unit connector,  extract the lamp unit carefully pulling in its middle towards the outside,
 remove the foam seal,  unclip the two small secondary connectors,
 spread the two tabs and remove the bulb holder,
 turn the bulb a quarter of a turn and change it. To reassemble, carry out these operations in reverse order. Take care to engage the lamp unit in its guides, while keeping it in line with the vehicle. Tighten sufficiently to ensure sealing, but without damaging the lamp.

Changing the lighting guides/sidelamps Number plate lamps (W5W) Third brake lamp (LEDs)
For the replacement of this type of LED lamp, contact a CITROËN dealer or a qualified
workshop.
For the replacement of this type of LED lamp, contact a CITROËN dealer or a qualified workshop.
To facilitate the removal of the lamp, carry out this operation with the tailgate half open.  Inser t a thin screwdriver into the lens cutout.
 Push it outwards.  Remove the lens.  Change the faulty bulb. To refit, press on the lens to clip it in place.

Towing the vehicle Procedure for having your vehicle towed or for towing another vehicle using a removable towing eye.
The towing eye is installed in the boot under the floor. To gain access to it:  open the boot,  raise the floor,
 secure it by hooking its cord on the hook on the rear parcel shelf suppor t,  remove the towing eye from the holder.
Access to the tools
General
recommendations
Obser ve the legislation in force in your country. Ensure that the weight of the towing vehicle is higher than that of the towed vehicle. The driver must stay at the wheel of the towed vehicle. Driving on motor ways and fast roads is prohibited when towing. When towing a vehicle with all four wheels on the ground, always use an approved towing bar; rope and straps are prohibited. When towing a vehicle with the engine
off, there is no longer any power assistance for braking or steering.
In the following cases, you must always call on a professional recovery ser vice: - vehicle broken down on a motor way or fast road, - when it is not possible to put the gearbox into neutral, unlock the steering, or release the parking brake, - towing with only two wheels on the ground, - where there is no approved towing bar available...