What is the method for replacing the air filter element of the Audi A4L?
3 Answers
Audi A4L air filter element replacement steps are as follows: 1. Loosen the screws on the upper cover of the air filter element housing. 2. Lift the upper cover of the housing to reveal the circular air filter element. 3. Remove the old air filter element and clean the inside of the air filter element housing. 4. Install the new air filter element. 5. Reattach the housing cover and tighten the screws. Below are the precautions for replacing the air filter element of the Audi A4L: 1. The Audi A4L manufacturer stipulates that the air filter element should be replaced every 40,000 kilometers, but the long replacement interval requires regular inspection of the air filter element's condition. 2. A heavily soiled air filter element not only has reduced air filtration capability but also increases air resistance.
Last time I helped my friend replace the air filter for an Audi A4L, it was quite simple – the whole process took just 15 minutes. Prepare a T25 screwdriver and a new filter. Open the hood, and the air filter box is the black square case on the left side of the engine. When unscrewing the 6 screws, remember to support the screwdriver to prevent the screws from falling into the engine bay gaps. After lifting the cover and removing the old filter, you’ll see a lot of dust. Wipe the inside of the box clean with a damp cloth before installing the new filter, making sure the arrow on the filter’s edge points toward the engine. When closing the cover and tightening the screws, don’t over-tighten them, as the plastic threads can strip easily. I change mine every 15,000 km. The dealership charges 300 RMB for parts, but buying a Mann filter yourself costs only 80 RMB. If you’re handy, you can definitely save this money.
As a repair shop owner who frequently changes Audi air filters, the most crucial step is selecting the correct part number. For the Audi A4L, either Mann's C14008 or Mahle's LX3809 will work – using the wrong model will prevent the cover from closing properly. The only tool you'll need is a T25 Torx screwdriver. When removing the six screws on top of the filter housing, remember their positions. After opening the housing, don't discard the old filter immediately; first take a photo to record the airflow arrow direction. The new filter must be installed in the same orientation to ensure proper filtration. After installation, check that the cover seals tightly to prevent dust ingress. We recommend replacement every 20,000 km or annually, with more frequent changes in dusty northern regions. This is also a good opportunity to clean leaves and debris from the intake ducts.
