GL 550 (164.886) V8-5.5L (273.963) (2008)
Knock Sensor: Description and Operation
GF07.04-P-6030V Knock Sensor Component Description
GF07.04-P-6030V Knock Sensor Component Description
Location
The knock sensors are located at the top of the crankcase under the intake manifold.
Task
The knock sensors detect combustion knocks at excessively high vibrations at the crankcase. Anti-knock control thereby corrects the ignition timing for
each individual cylinder when the engine is warm.
Body
The knock sensors function according to the piezoceramic principle. The screened cables are connected directly to the knock sensors.