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:
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With certain types of frontal collisions, the vehicle’s body structure is designed
to absorb the shock to help protect the occupants from harm. (The vehicle body’s
front area may deform signif ...
Automatic transmission fluid
The proper amount of automatic transmission fluid is essential to the life and
operation of the automatic transmission. Either insufficient fluid or excessive
fluid could cause transmission trou ...