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:
To accelerate for passing
Depress the accelerator pedal in the normal way. When the pedal is released,
your vehicle will return to the set speed. ...
During cold weather
The capacity of the battery is reduced at low temperatures.
This is an inevitable result of its chemical and physical properties.
This is why a very cold battery, particularly one that is not fully ...
Parking brake break-in
Break-in the parking brake linings whenever the brake performance of the parking
brake is insufficient or whenever the parking brake linings and/or discs are replaced,
in order to assure the best ...