Vanden Plas (X308) V8-4.0L (AJ27) (2000)
Cabin Air Filter: Description and Operation
Particle Filter Compensation
Where particle filters are fitted as 'after market' items the A/CCM program must be changed to allow higher AUTO blower speeds; this compensates for
the slight loss of air flow. Access to the program is by PDU.
Vehicles with filters fitted OEM will have this facility enabled by Jaguars Cars Ltd.