Remove/install wheel sensor - AR40.15-P-0080CW

MODEL 171, 204, 209 

with CODE (470) Tire pressure monitor (Schrader) 

with CODE (475) Tire pressure monitor (Schrader) 

Fig 1: Identifying Wheel Sensor Components

Courtesy of MERCEDES-BENZ USA

	Removing
	Notes on using tester for tire pressure monitoring systems	Tester MB 2000E	-
1	Remove valve cap (1)	Only use valve caps (1) made of plastic otherwise corrosion damage will occur
2	Detach tires	-	AR40.10-P-1030A
3	Unscrew collar nut (2) from valve body (3) and remove
4	Remove tire pressure sensor (A69/1 up to A69/4) with valve body (3) from disk wheel
5	Remove seal (5) and support ring (6) from valve body (3)
6	Remove valve body (3) of tire pressure sensor (A69/1 to A69/4)	When reusing the tire pressure sensor (A69/1 up to A69/4)
	Clean
7	Clean tire pressure sensor (A69/1 up to A69/4)	When reusing the tire pressure sensor (A69/1 up to A69/4). Only remove dirt with a clean, lint-free cloth. Do not use compressed air, solvents or cleaners. The tire pressure sensor (A69/1 to A69/4) can also be reused after using TIREFIT tire sealant.
8	Clean the disk wheel in the area of the valve bore
	Checking
9	Carry out visual inspection of tire pressure sensor (A69/1 up to A69/4)	Replace tire pressure sensor (A69/1 up to A69/4) if damage is detectable.
10	Check disk wheel for damage in the area of the valve bore
	Install
11	Detach label (4) with identification number (I) from tire pressure sensor (A69/1 up to A69/4) and glue into maintenance booklet	When replacing the tire pressure sensor (A69/1 up to A69/4)
12	Replace valve body (3) and valve element (7)	When reusing the tire pressure sensor A69/1 up to A69/4) Insert square of valve body (3) in the guide on the tire pressure sensor (A69/1 up to A69/4) so that this is fixed in position.
13	Mount support ring (6) and seal (5) on valve body (3)	The cone on the support ring (6) must seat correctly in the contour of the tire pressure sensor (A69/1 up to A69/4). Observe installation position (see arrow).
14	Insert valve body (3) with tire pressure sensor which is free to move (A69/1 up to A69/4) from the inside outwards in the valve bore of the disk wheel
15	Tighten collar nut (2) on valve body (3)	Observe the correct collar nut design for steel wheels or light alloy wheels. When tightening the collar nut (2), press the tire pressure sensor (A69/1 up to A69/4) lightly into the drop center and press towards the valve bore of the disk wheel.
16	Mount tire		AR40.10-P-1030A
	To activate the tire pressure monitor, carry out operation step 17 or 18 as an alternative
17	Code the identification number (I) of tire pressure sensor (A69/1 to A69/4) and specified tire pressure in the tire pressure monitor control unit using STAR DIAGNOSIS	When replacing the tire pressure sensor (A69/1 up to A69/4) Process all steps under: "Control units" - "Chassis" - "TPM tire pressure monitor" - "Initial startup" - "Initial startup with manual settings input for new control unit".
18	Activate the tire pressure monitoring system	When replacing the tire pressure sensor (A69/1 up to A69/4)