Remove/install rear axle speed sensor - AR42.30-P-0714AA

MODEL 463.202 /222 /237 /243 /244 /245 /246 /247 /249 /250 /254 /303 /309 /322 /323 /332 /333 /340 /341 with disk brake 

MODEL 463.236 /248 except CODE (979) Special protection version with drum brake 

Fig 1: Identifying Rear Axle Speed Sensor Remove/Install Components (1 Of 3)

Courtesy of MERCEDES-BENZ USA

Fig 2: Identifying Rear Axle Speed Sensor Remove/Install Components (2 Of 3)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Rear Axle Speed Sensor Remove/Install Components (3 Of 3)

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of explosion  caused by oxyhydrogen gas. Risk of poisoning and caustic burns  caused by swallowing battery acid. Risk of injury  caused by burns to skin and eyes from battery acid or when handling damaged lead-acid batteries	No fire, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers.	AS54.10-Z-0001-01A
1	Activate service mode in Telematic Alarm Identification on Demand (emergency call system) (TELE AID)	Only on model 463.243/244/245/250/309/322/323/332/333 with code (ET2) Tele Aid - car telephone emergency call system, model 463.247/248/254 up to 1.4.07 with code (ET2) Tele Aid - car telephone emergency call system	AR82.95-P-0005-03GR
	Notes on battery	All models	AH54.10-P-0001-01A
	Notes regarding the Tele-Aid emergency call system		AH82.95-P-0001-01GA
2	Disconnect ground line of battery (G1)	All except model 463.236/248 with code (979) Special protection version, with code (ZS6) Special protection version FB6, with code (E26) Additional battery 100 Ah incl., cutoff relay, Except model 463.236/248 with code (979) Special protection version, with code (ZS7) Special protection version FB7, with code (E26) Additional battery 100 Ah incl., cutoff relay	AR54.10-P-0003G
	Notes on battery	All models	AH54.10-P-0001-01A
3	Remove rear wheel.	Wheel bolt, sheet-steel disk wheel	*BA40.10-P-1001-03A
		Wheel bolt, light-alloy disk wheel	*BA40.10-P-1002-03A
4	Pull left rear rpm sensor (L6/3) or right rear rpm sensor (L6/4) carefully out of the bushing in the brake carrier (1)	Installation:  Set distance between measuring ring and left rear rpm sensor (L6/3) or right rear rpm sensor (L6/4) through moving it. Failing to do so may result in malfunctions or total failure in or to the antilock brake system (ABS) or the Electronic Stability Program (ESP).
		Installation:  Clean bushing in brake carrier (1). Insert left rear rpm sensor (L6/3) or right rear rpm sensor (L6/4) and adjust distance between measuring ring and left rear rpm sensor (L6/3) or right rear rpm sensor (L6/4).	*BE42.30-P-1001-01A
	Checking
5	Check measuring ring of wheel hub for signs of damage	Model 463 with rear axle 741, 742 except rear axle 741.52, rear axle with brake system, ABS Replace damaged measuring ring, refer to: REMOVE/INSTALL ABS MEASURING RING
		Model 463 with rear axle 741 (except 741.52/53) Rear axle with ABS brake system Model 463 with rear axle 742 rear axle with ABS brake system Remove/install ABS measuring ring	↓AR42.30-P-0160GG
		Model 463 with rear axle 741.52/53	AR42.30-P-0160GL
6	Remove bronze sleeve (2).	Installation:  Press bronze sleeve (2) slightly together.
7	Remove load compartment relay module.	Model 463.202/222/237/243/244/245/ 246/247/249/250/254/303/309/322/ 323/332/333/340/341, Model 463.236/248 except code (979) Special protection version	AR54.15-P-1265GR
8	Disconnect frame connector 22-pin (X92/3)	The frame connector (22-pin) (X92/3) is located in the load space toolbox.
9	Detach connectors in load space toolbox
10	Remove water shield		AR61.30-P-0010A
11	Guide harness (4) through floor opening (5).
12	Detach harness attachments underneath the vehicle.
13	Remove holder for electrical lines of left rear rpm sensor (L6/3) or right rear rpm sensor (L6/4)
14	Detach electrical lines of left rear rpm sensor (L6/3) or the right rear rpm sensor (L6/4) from the wiring harness	Installation:  Use new friction tape.
15	Remove electrical lines of left rear rpm sensor (L6/3) or the right rear rpm sensor (L6/4) from frame connector (22-pin) (X92/3)	Remove pins 19, 20, 21 and 22.
16	Remove left rear rpm sensor (L6/3) or right rear rpm sensor (L6/4) with electrical lines	Installation:  Pay attention to correct line routing.
17	Install in the reverse order
18	Deactivate service mode in Tele-Aid emergency call system	Only on model 463.243/244/245/250/309/ 322/323/332/333 with code (ET2) Tele Aid - car telephone emergency call system, model 463.247/248/254 up to 1.4.07 with code (ET2) Tele Aid - car telephone emergency call system	AR82.95-P-0005-03GR
	Notes regarding the Tele-Aid emergency call system		AH82.95-P-0001-01GA
19	Read out and erase fault memory	Stored faults which may be caused by assembly work, test work, removed lines or a simulation, must be processed and erased in fault memories after completing the work.
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-P-2000-04A