LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Mercedes Benz >> 2019 >> GLC300 4Matic, 4D Utility >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Mixture Formation - 253 Chassis - 2 Of 4 >> Testing & Repair >> Remove/Install Left Fuel Pressure Sensor - AR07.04-P-0201MNG
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Remove/Install Left Fuel Pressure Sensor - AR07.04-P-0201MNG

Engine 177 in Model 253 

Fig 1: Left Fuel Pressure Sensor Components Location - Engine 177 In Model 253
G12816802Courtesy of BMW OF NORTH AMERICA, INC.
  Risk of explosion  caused by fuel igniting, risk of poisoning caused by inhaling and swallowing fuel as well as risk of injury to eyes and skin caused by contact with fuel. No fires, sparks, open flames or smoking. Pour fuels into suitable and appropriately marked containers only.
Wear protective clothing when handling fuel.
AS47.00-Z-0001-01A
  Risk of explosion  caused by fuel igniting. Risk of injury  to skin and eyes caused by fuel spraying out at high pressure Keep all ignition sources out of hazard area.
Do not carry out any work on system when it is pressurized.
AS07.16-Z-0001-01A 
  Notes on avoiding damage through contamination and foreign objects   AH00.00-P-5000-01A
  Note on calculation of tightening torque when using insertion or socket tools with various effective lengths   AH00.00-P-0015-01CW
  General information on work on gasoline direct injection system   AH07.00-P-2000-01A
REMOVINGINSTALLING Remove/install     
1 Remove left-hand air filter housing   AR09.10-P-1151MNG
2 Relieve fuel pressure over diagnostic socket   AR07.03-P-1460-01MNG 
TORQUE SPECIFICATION Dust protection cap to service connection *BA07.03-P-1005-01H 
SPECIAL TOOL Pressure hose Figure
3 Release and disconnect electrical connector at left fuel pressure and temperature sensor (B42/2)    
4 Clean rail in the area of left fuel pressure and temperature sensor (B42/2) NOTES Absolute cleanliness is essential when working on the high-pressure fuel circuit. Use only lint-free cleaning cloths
Damage will occur otherwise on the high-pressure fuel circuit.
 
Assembly cleaner *BR00.45-Z-1028-04A 
5 Cover area around left fuel pressure and temperature sensor (B42/2) with suitable rags and carefully slightly release left fuel pressure and temperature sensor (B42/2) IMPORTANT Wear oil-resistant, fiber-free gloves lined with rubber.  
SPECIAL TOOL Box wrench attachment, 27 mm Figure
6 Unscrew left fuel pressure and temperature sensor (B42/2) from rail and remove INSTALLATION NOTES : Use new left fuel pressure and temperature sensor (B42/2), as left fuel pressure and temperature sensor (B42/2) is only designed to be screwed on once.
Leaks can occur otherwise.
IMPORTANT Collect exuded fuel using a suitable absorbent rag.
 
7 Install in the reverse order    
8 Read out and erase fault memory   AD00.00-P-2000-04B
9 Inspect fuel system for leaks   AR07.03-P-1010-04MM 
WARNING Risk of accident  from Vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running. Secure Vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts. AS00.00-Z-0005-01A
10 Perform an engine test run and check engine for proper operation and leaktightness    
INJECTION NOZZLES, INJECTION VALVES, LINES

Number Designation Engine 177
BA07.03-P-1005-01H Dust protection cap to service connection Nm 1
Fig 2: Identifying Box Wrench Attachment, 27_MM (000 589 10 99 30)
G12816803Courtesy of BMW OF NORTH AMERICA, INC.
Fig 3: Identifying Pressure Hose (119 589 04 63 00)
G12078803Courtesy of BMW OF NORTH AMERICA, INC.
REPAIR MATERIALS

Number Designation Order number
BR00.45-Z-1028-04A Assembly cleaner Adolf Wurth GmbH & Co. KG