Remove/install brake booster vacuum sensor - AR43.10-P-0352MEX

MODEL 451.390/490 

Shown on MODEL 451.490 with CODE V03 (Battery cooling system) 

Fig 1: Identifying Brake Booster Vacuum Sensor Remove/Install Components - Shown On Model 451.490 With Code V03

Courtesy of MERCEDES-BENZ USA

	Risk of death  when touching components on vehicles with high-voltage on-board electrical system	Do not touch components and open lines of the high-voltage on-board electrical system. Persons who wear electronic implants (e.g. cardiac pacemakers), must not  carry out any work on high-voltage on-board electrical systems.	AS54.00-Z-0001-01A
	Note on high-voltage battery		AH54.10-P-0006-01MEV
Note on high-voltage on-board electrical system			AH54.00-P-0010-01A
	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
	Remove/install
1	Remove transmitter key and mains plug
2	Push down brake pedal several times	To reduce any vacuum.
	Risk of death  caused by vehicle slipping or toppling off of the lifting platform.	Align vehicle between vehicle lift columns and position the four support plates at the vehicle lift support points specified by the vehicle manufacturer.	AS00.00-Z-0010-01A
3	Raise vehicle with vehicle lift
4	Unscrew high-voltage battery circuit heat exchanger (4)	Model 451.390/490 with engine 780.993 with code V03 (Battery cooling system) Refrigerant lines and coolant hoses can remain connected.	AR20.00-P-0210MEX
5	Remove front underfloor paneling
6	Remove bolts (1)	Bolt, support, front axle carrier to front axle carrier	*BA33.10-P-1002-01D
7	Unscrew bolts (2)	Bolt, support, front axle carrier to body	*BA33.10-P-1003-01D
8	Pull the front axle carrier support (3) down until the brake vacuum sensor 1 (B64/2) and brake vacuum sensor 2 (B64/3) are accessible
9	Unscrew nut (5) on vacuum sensor bracket (6) and remove vacuum sensor bracket (6)	The vacuum sensor bracket (6) is integrated in the brake booster vacuum line.
10	Release and disconnect electrical connectors (7, 8)
11	Push out brake vacuum sensor 1 (B64/2) and brake vacuum sensor 2 (B64/3) out of the vacuum sensor bracket (6) using clip remover (9)	Ensure that the brake vacuum sensor 1 (B64/2) and the brake vacuum sensor 2 (B64/3) are pushed completely into the seals of the vacuum sensor bracket (6). Otherwise, it could lead to leakage, thus causing damage to the brake system. Position clip remover (9) between brake vacuum sensor 1 (B64/2) or brake vacuum sensor 2 (B64/3) and vacuum sensor bracket (6) (arrow). Clip remover	Fig 2
12	Install in the reverse order

Fig 2: Identifying Clip Remover (452 589 01 63 00)

Courtesy of MERCEDES-BENZ USA