Remove/Install Left Rear Knock Sensor - AR15.12-P-2187MRI

WARNING: This page is about a different car, the 2023 Mercedes-Benz GLC300, 2022 Mercedes-Benz GLC300, 2021 Mercedes-Benz GLC300, 2020 Mercedes-Benz GLC350e, and 2020 Mercedes-Benz GLC300. However, it is still accessible from the selected car via links, so may be relevant.

Engine 264 in model 205, 253

Fig 1: Left Rear Knock Sensor Components Location - Engine 264 In Model 253

Courtesy of MERCEDES-BENZ USA

	Risk of injury caused by scraping or cutting body parts on sharp vehicle parts	Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels.	AS00.00-Z-0017-01A
	Notes on avoiding damage through contamination and foreign objects		AH00.00-P-5000-01A
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Remove center and rear sections of lower Engine compartment lining.		AR61.20-P-1105LW
2	Release and disconnect electrical connector (4).
3	Remove screw (2) and remove knock sensor 2 (A16/2).	Bolt, knock sensor to crankcase	*BA15.10-P-1001-02H
4	Install in the reverse order.
	Concluding tasks
5	Connect vehicle diagnosis system, read out fault memory, and delete.
			AD00.00-P-2000-04B
	Risk of burn injuries , suffocation and poisoning when working on the exhaust system and the components connected to it. Risk of suffocation and risk of poisoning caused by inhalation of gaseous and solid components of the exhaust. Risk of poisoning caused by skin contact with solid components of the exhaust.	Wear protective clothing and safety glasses. Use the extraction system. Move people out of the hazard area.	AS49.00-Z-0001-01A
	Risk of accident from vehicle starting off by itself when Engine running. Risk of injury (bruises and burns) resulting from working on the Engine while it is being started or when it is running.	Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
6	Conduct Engine test run while checking for proper operation of the Engine.

KNOCK SENSORS

Number	Designation		Engine 264
BA15.10-P-1001-02H	Bolt, knock sensor to crankcase	Nm	20