Remove/Install Engine Oil Fill Level Sensor - AR18.40-P-5116MSA

2021 Mercedes Benz GT 53 AMGSECTION Remove/Install Engine Oil Fill Level Sensor - AR18.40-P-5116MSA

Engine 256.9 in model 213, 238, 257, 290 

Shown on vehicle with code M005 (4MATIC) 

Fig 1: Engine Oil Fill Level Sensor Components Location - Engine 256.9 In Model 290 (Shown With Code M005)
G16553008Courtesy of MERCEDES-BENZ USA
CAUTION Risk of injury  to skin and eyes due to handling of engine oil. Risk of poisoning  caused by swallowing engine oil Wear protective gloves, protective clothing and safety glasses.
Do not fill engine oil into beverage containers.
AS18.00-Z-0001-01A 
REMOVINGINSTALLING Remove/install     
1
REFER TO MAINTENANCE
Drain engine oil. Engine 256 in model 238.358/458
Engine 256 in model 257.358
AP18.00-P-0101MRS
REFER TO MAINTENANCE   Engine 256 in model 213, 238 (except 238.358/458), 257 (except 257.358), 290 AP18.00-P-0101MRT 
    INSTALLATION IMPORTANT : Install bottom center engine compartment lining only after the leak test.  
2 Remove front diagonal struts. Engine 256.9 in model 238.4 AR61.10-P-5144LWO
3 Release and disconnect electrical connector (3).    
4 Remove screws (2) and remove engine oil fill level sensor (B40/6). INSTALLATION IMPORTANT : Replace compression ring (4).
TORQUE SPECIFICATION Screw/bolt, oil level sensor to oil pan lower part
*BA01.45-P-1002-01MRT 
5 Install in the reverse order.    
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
6 Carry out engine test run and check engine for proper operation and leak tightness.    
7 Install bottom center engine compartment lining. Engine 256.9 in model 213, 238 AR61.20-P-1105LWE
    Engine 256.9 in model 290 AR61.20-P-1105FRX
    Engine 256.9 in model 257 AR61.20-P-1105FR
OIL PAN, OIL LEVEL SENSOR

Number Designation Engine 256
BA01.45-P-1002-01MRT Screw/bolt, oil level sensor to oil pan lower part Nm 8
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.