Remove/install electronic stability program (ESP) hydraulic unit - AR42.45-P-0817GW

MODEL 463 as of model year 2013/model refinement package 2012 

Fig 1: Electronic Stability Program Hydraulic Unit Remove/Install Components

Courtesy of MERCEDES-BENZ USA

	Remove/install
	Risk of poisoning  caused by swallowing brake fluid. Risk of injury  caused by brake fluid coming into contact with skin and eyes	Only pour brake fluid into suitable and appropriately marked containers. Wear protective clothing and eye protection when handling brake fluid.	AS42.50-Z-0001-01A
	Risk of accident  when commissioning the vehicle due to a lack of braking effect when the service brake is operated for the first time after repair work	Before starting engine, actuate brake pedal several times until the pressure is built up and maintained in the brake system.	AS42.50-Z-0002-01A
	Notes on repairs to brake system		AH42.00-P-0003-01A
	Brake fluid notes		AH42.50-P-0001-01A
1	Detach ground line from battery		AR54.10-P-0003GW
	Notes on battery		AH54.10-P-0001-01A
2	Open engine hood		AR88.40-P-1000GG
3	Suction off brake fluid from brake fluid reservoir
	Clean
4	Clean area surrounding electrical connection (1) and brake lines (2)	Before opening the brake system the area around the separation point should be cleaned thoroughly. Even the smallest particles of dirt, introduced into the hydraulic components, can lead to malfunctions and a total failure of the brake system. Only use clean, lint free rags and cleaner free of mineral oil. Do not use any compressed-air for cleaning when the brake system is open.
		Cleaner from package	*BR00.45-Z-1028-04A
5	Mark brake lines (2) to connections on hydraulic unit (A7/3)
6	Detach brake lines (2) from hydraulic unit (A7/3)	Immediately seal connections using stop plugs to prevent larger quantities of brake fluid from escaping. Collect escaping brake fluid using a suitable container. Note markings.
			*BA42.10-P-1004-04B
			Figure
			Fig 3
			Figure
			Figure
7	Release and disconnect electrical connector (1)
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
8	Remove hydraulic unit (A7/3) from holder	Check all rubber grommets for damage and correct seating, replace if necessary.
	Clean
9	Remove any escaped brake fluid	Rinse soiled parts immediately with water. Otherwise the paint will be damaged.
10	Detach carrier from hydraulic unit (A7/3)	When replacing the hydraulic unit (A7/3)
11	Install in the reverse order
12	Bleed brake system		AR42.10-P-0010GW
	Checking
13	Check brake system in area of hydraulic unit (A7/3) for leaks
14	Read out and erase the fault memory using Star Diagnosis		AD00.00-P-2000-04A
15	Perform calibration on Electronic Stability Program control unit using STAR DIAGNOSIS

BRAKE LINES, BRAKE HOSES

Number	Designation		Model 463.272/273
BA42.10-P-1004-04B	Brake line to ABS/ESP hydraulic unit	Nm	15

Fig 2: Identifying Box Wrench Bit (000 589 75 03 00)

Courtesy of MERCEDES-BENZ USA

Fig 3: Identifying Box Wrench Bit (140 589 00 03 00)

Courtesy of MERCEDES-BENZ USA

Fig 4: Identifying Set Of Stop Plugs (129 589 00 91 00)

Courtesy of MERCEDES-BENZ USA

Fig 5: Identifying Torque Wrench (001 589 72 21 00)

Courtesy of MERCEDES-BENZ USA

REPAIR MATERIALS

Number	Designation	Order number
BR00.45-Z-1028-04A	Cleaner from package	Adolf Wurth GmbH & Co. KG