Fuel injection amount learning process (diesel-powered vehicles)
To keep exhaust emissions and engine noise low, the engine very occasionally performs a learning process for the fuel injection amount.
The engine sounds slightly different from usual while the learning process is taking place. The change in the engine sound does not indicate a fault.
See also:
Diesel particulate filter (DPF)
The diesel particulate filter (DPF) is a device that captures most of the particulate
matter (PM) in the exhaust emissions of the diesel engine. The DPF automatically
burns away trapped PM during ...
Chrome parts
In order to prevent spots and corrosion of chrome parts, wash with water, dry
thoroughly, and apply a special protective coating. This should be done more frequently
in winter. ...
Automatic air conditioning*
The air conditioning can only be operated while the engine is running.
CAUTION
When using the air conditioning, the idling speed may slightly increase
as the air conditioning compressor is switche ...