- Fig. 1 Audi A8 as seen from the rear right: AdBlue cap
- Fig. 2 AdBlue filler neck: Inserting the refill bottle
Applies to Audi A8s: with selective catalytic reduction
A special refill bottle is needed in order to fill the tank with AdBlue.
The AdBlue filler neck is located immediately beside the diesel filler neck. Always refill with 3.8 litres of AdBlue (two bottles). If you do not refill this amount of fluid, the system may not detect that the tank has been refilled and it may not be possible to restart the engine. You can refill with a maximum of 16 litres.
Opening the AdBlue cap and refilling AdBlue
Important: A message in the instrument cluster display informs you if you need to refill AdBlue.
Switch off the ignition.
Open the tank flap Link.
Unscrew the Adblue cap anti-clockwise Fig. 1.
Take the cap off the refill bottle.
Screw the refill bottle onto the filler neck clockwise as far as it will go -1- Fig. 2.
To empty the refill bottle, lightly press the bottom of the bottle -2-. Keep pressing the bottom of the bottle until the bottle is empty, or until no more fluid runs into the tank.
Unscrew the bottle anti-clockwise without applying pressure.
Closing the AdBlue cap
Screw the AdBlue cap clockwise onto the filler neck until the AdBlue cap clicks audibly.
Close the tank flap.
After refilling
The Audi A8 must be driven. It can take up to two minutes for the system to detect that the AdBlue has been refilled.
If the AdBlue tank had run dry and a range of 0 km was shown in the instrument cluster display, switch on the ignition for approx. 15 seconds before starting the engine.
WARNING!
AdBlue can cause irritation to the skin, eyes, and respiratory organs. Wash thoroughly with clean water should you come into contact with this fluid. Seek medical assistance if needed.
Caution!
- Use only AdBlue that complies with the ISO 22241-1 standard. Do not mix AdBlue with additives and do not dilute it with water.
- AdBlue is not a diesel fuel additive and must not be added to the diesel tank. Mixing AdBlue with diesel fuel can damage the engine and the AdBlue tank system. Such damage is not covered by the warranty.
- AdBlue attacks surfaces such as paintwork, plastic veneer and carpets. Remove spilt fluid as soon as possible with a damp cloth and plenty of water. If the AdBlue has already solidified, use warm water and a sponge. Unremoved residues of AdBlue solidify after a while and can damage the affected surface.
- Do not carry refill bottles in the Audi A8 all the time, as leaking AdBlue can damage the Audi A8 interior.
- Keep AdBlue away from clothing. Wash thoroughly with clean water should you come into contact with this fluid.
Note
- Refill bottles are available from qualified workshops.
- Please follow the AdBlue manufacturer's instructions for storage and use.