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Home >> Mercedes Benz >> 2021 >> G63 AMG >> Repair and Diagnosis >> Engine Performance >> Tune-Up >> Electrical System - Engine - 463 Chassis >> Testing & Repair >> Remove/Install Knock Sensors - AR15.12-P-2184MNF

Remove/Install Knock Sensors - AR15.12-P-2184MNF

Engine 176 in model 463 

up to model year 2019 

G13656583Courtesy of MERCEDES-BENZ USA
G13656584Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
1 Unclip electrical connection from knock sensor (3) at left cylinder head cover When removing the knock sensor (3).  
2 Detach bracket on starter wiring harness (5) on crankcase When removing the knock sensor (3).  
    TORQUE SPECIFICATION
Bolt, starter wiring harness to oil pan/crankcase/cylinder head/firewall
*BA15.30-P-1002-01T 
3 Detach bracket on starter wiring harness (5) on transmission When removing the knock sensor (3).  
4 Unclip wiring harness of knock sensor (3) on left cylinder head When removing the knock sensor (3).  
5 Remove left charge air distributor When removing the knock sensor (4).  
      AR09.41-P-8683MNF
6 Detach power steering pump and place with attached lines to one side When removing the knock sensor (4).  
    Engine 176 in model 463
as of model year 2016 up to model year 2019
AR46.30-P-0500GWA
7 Detach coolant line holder (6) on the power steering pump bracket (7) When removing the knock sensor (4).  
8 Remove screw/bolts from power steering pump bracket (7) and remove power steering pump bracket (7) When removing the knock sensor (4).  
    TORQUE SPECIFICATION
Model 463.234/239 with engine 176 up to model year 2019Screw/bolt, power steering pump bracket to belt tensioner/engine support bracket
*BA46.30-P-1027-01B 
9 Disconnect cable ties at electrical line from knock sensor (4) When removing the knock sensor (4).
INSTALLATION IMPORTANT : Replace cable tie.
 
10 Disconnect electrical connection for knock sensor (1) When removing the knock sensor (1).  
11 Disconnect electrical connection for knock sensor (2) When removing the knock sensor (2).  
12 Disconnect electrical connection for knock sensor (3) When removing the knock sensor (3).  
13 Disconnect electrical connection for knock sensor (4) When removing the knock sensor (4).  
14 Remove screw/bolt of knock sensor (1) and remove knock sensor (1). When removing the knock sensor (1).  
    TORQUE SPECIFICATION
Bolt, knock sensor to crankcase
*BA15.10-P-1001-02G 
15 Remove screw/bolt of knock sensor (2) and remove knock sensor (2) When removing the knock sensor (2).  
    TORQUE SPECIFICATION
Bolt, knock sensor to crankcase
*BA15.10-P-1001-02G 
16 Remove screw/bolt of knock sensor (3) and remove knock sensor (3) When removing the knock sensor (3).  
    TORQUE SPECIFICATION
Bolt, knock sensor to crankcase
*BA15.10-P-1001-02G 
17 Remove screw/bolt of knock sensor (4) and remove knock sensor (4) When removing the knock sensor (4).  
    TORQUE SPECIFICATION
Bolt, knock sensor to crankcase
*BA15.10-P-1001-02G 
18 Install in the reverse order    
19 Check engine oil level, adjust to correct level if necessary    
REFER TO MAINTENANCE     AP18.00-P-0101GE
WARNING 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
20 Perform an engine test run and check engine for proper function    
KNOCK SENSORS

Number Designation Engine 176
BA15.10-P-1001-02G Bolt, knock sensor to crankcase Nm 20
STARTER

Number Designation Engine 176
BA15.30-P-1002-01T Bolt, starter wiring harness to oil pan/crankcase/cylinder head/firewall Nm 9
POWER STEERING PUMP

Number Designation Model 463.234/239
BA46.30-P-1027-01B Screw/bolt, power steering pump bracket to belt tensioner/engine support bracket Nm 20