Remove/Install Electronic Stability Program (ESP(R)) Hydraulic Unit - AR42.45-S-0817E

Model 447, 448

MODIFICATION NOTES

07.12.2023

Work procedure updated

The whole document

Shown with engine 651

Courtesy of MERCEDES-BENZ USA

Shown with engine 780.702

Courtesy of MERCEDES-BENZ USA

	Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)	Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines. Model 447 with engine 780	AS00.00-Z-0035-01A
	Risk of poisoning from swallowing brake fluid. Risk of injury from skin and eye contact with brake fluid	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
Notice	General information on vehicles with high-voltage on-board electrical system and/or lithium-ion battery and/or gaseous-fuel drive system as well as personal protective equipment	Model 447 with engine 780	AH00.00-Z-0300-01A
Notice	Information on preventing damage to electronic components due to electrostatic discharge		AH54.00-P-0001-01A
Notice	Brake fluid notes		AH42.50-P-0001-01A
Notice	Notes on repairs to brake system		AH42.00-P-0003-01A
	Notes on inspecting corrosion on brake lines		AH42.50-Z-0002-01A
	Note on calculation of tightening torque when using insertion or socket tools with various effective lengths		AH00.00-P-0015-01CW
	General information on malfunctions in the brake system		AH42.30-D-2007-01KOA
	Remove/install
1	Suction off brake fluid from brake fluid reservoir (1) and then reseal brake fluid reservoir (1).	Commercially available devices/tools Extraction bellows
2	Remove brake fluid reservoir (1) from air/water duct.	To do so, remove expansion rivet. Check expansion rivet for damage. If damage is found, ↓ replace expansion rivet.
3	Disconnect electrical connector (4).
4	Remove hydraulic lines (2).	Mark assignment of hydraulic lines (2). Collect any escaping brake fluid using suitable rags. Seal the connections and hydraulic lines (2). Different retaining screws are installed depending on the given vehicle version. Note assignment of hydraulic lines (2). Retaining screw, brake line to hydraulic unit	*BA42.10-Z-1003-04KOD
		Box wrench bit	Fig 4
		Box wrench	Fig 1
		Box wrench bit	Fig 2
		Record plug	Fig 3
5	Remove hydraulic lines (3).	Mark assignment of hydraulic lines (3). Collect any escaping brake fluid using suitable rags. Seal connections and hydraulic lines (3). Different retaining screws are installed depending on the given vehicle version. Note assignment of hydraulic lines (3). Retaining screw, brake line to hydraulic unit	*BA42.10-Z-1003-04KOD
		Box wrench bit	Fig 4
		Box wrench	Fig 1
		Box wrench bit	Fig 2
		Record plug	Fig 3
6	Remove nuts (5).	Model 447 with engine 274, 622, 651, 780.701 Model 447 with engine 654 except code XM7 (MOPF II) Model 448 with engine 274 Nut, hydraulic unit to bracket	*BA42.30-P-1001-03E
7.1	Remove Electronic Stability Program (ESP) control unit (N30/4).	Model 447 with engine 274, 622, 651, 780.701 Model 447 with engine 654 except code XM7 (MOPF II) Model 448 with engine 274
7.2	Remove Electronic Stability Program (ESP) control unit (N30/4) with holder (6).	Model 447 with engine 654 with code XM7 (MOPF II) Model 447 with engine 780.702/705 Model 447, 448 with engine 254 Check holder (6) is correctly seated in guides (7).
8	Remove Electronic Stability Program (ESP) control unit (N30/4) from holder (6).	Model 447 with engine 654 with code XM7 (MOPF II) Model 447 with engine 780.702/705 Model 447, 448 with engine 254 When replacing the Electronic Stability Program (ESP) control unit (N30/4). To do this, remove screw. Bolt, hydraulic unit to bracket	*BA42.30-P-1002-03E
9	Install in the reverse order.
10	Commission Electronic Stability Program (ESP) control unit (N30/4) using diagnostic system.	When replacing the Electronic Stability Program (ESP) control unit (N30/4).
	Connect STAR DIAGNOSIS and read out fault memory		AD00.00-S-2000-04E
11	Remove diagnostic system.	When replacing the Electronic Stability Program (ESP) control unit (N30/4).
12	Bleed brake system.		AR42.10-S-0010E