If, in the course of maintenance or repairs, work is performed in the area of the clean air line or if it is removed, then it must be ensured that the seals and boots of the clean air line are not damaged or incorrectly installed.
This could lead to the following fault profiles:
Engine diagnosis warning lamp lights up
Engine has low output, switches to limp-home, emits blue smoke
Damage to turbocharger
Engine damage
Damaged or deformed seals or boots must always be replaced.
Incorrect mounting will result in complaints about engine running characteristics. Under certain circumstances, damaged or deformed seals on the clean air line cause damage to the engine through the ingress of dirt or foreign bodies. In the event of a complaint, the seals and boots for the clean air line are to be checked for correct seating and signs of damage. Picture documentation is recommended here.
Warranty and goodwill claims for engine damage, that has been caused by incorrect mounting of the clean air line, will be rejected by the inspection station.
Please also note the corresponding TIPS documents in groups 09.40 and 14.20.