Remove/Install Crankshaft Hall Sensor - AR15.12-P-2136MSA

Engine 256.9 In Model 213, 238, 257, 290 

Fig 1: Crankshaft Hall Sensor Components Location - Engine 256.9 In Model 238

Courtesy of MERCEDES-BENZ USA

Topical note	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Remove center and rear lower 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
2	Remove left bracket of 48V wiring harness from transmission and place to one side.	M6X1	*BA00.10-P-1002-04A
3	Release and disconnect electrical connector (2).
4	Remove screw (1).	Bolt, position sensor for crankshaft to crankcase/oil pan	*BA15.10-P-1001-03I
5	Remove crankshaft Hall sensor (B70).
6	Install in the reverse order.
	Check
7	Read out and delete fault memory.
		Engine 256.9 in model 213	AD00.00-P-2000-04B
		Engine 256.9 in model 238	AD00.00-P-2000-06LWO
		Engine 256.9 in model 257, 290	AD00.00-P-2000-06FR
	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
8	Perform an engine test run and check the engine for proper function.

METRIC SCREWS/BOLTS AND NUTS AS PER MBN 10 105, 10 143

Number	Designation		8.8	10.9
BA00.10-P-1002-04A	M6X1	Nm	9	13

POSITION SENSOR

Number	Designation		Engine 256.9
BA15.10-P-1001-03I	Bolt, position sensor for crankshaft to crankcase/oil pan	Nm	7