13 62 620 Replace the Nitrogen Oxide Sensor Before the SCR Catalytic Converter (With SCR)

13 62 620 Replace The Nitrogen Oxide Sensor Before The SCR Catalytic Converter (With SCR) M57T2







Special tools required:
- 11 7 030







IMPORTANT:
Ensure adequate ventilation in the workbay.
Avoid skin contact (wear gloves).
Avoid eye contact (safety goggles).
Urea/water mixture can escape when components carrying urea/water mixture are released. Have a collecting vessel ready.
Observe country-specific waste disposal regulations.







Necessary preliminary work:
- Remove underbody protection at front and rear.

IMPORTANT:
Risk of burning.
Only perform this repair work on an engine that has cooled down.







Release nitrogen oxide sensor (1) with special tool 11 7 030.

Installation note:
Tightening torque 16 19 10AZ.

Threads of new nitrogen oxide sensors are coated with Never-Seez compound.
If a nitrogen oxide sensor is reused, apply a thin and uniform coating of Never-Seez compound to thread only.
Do not clean the sensor section which protrudes into the exhaust branch and ensure that it avoids all contact with lubricants.







Unclip nitrogen oxide sensor line from gearbox bracket.
Disconnect connector connection (1).
Unscrew nuts (2).
Remove nitrogen oxide sensor (3).







After completing repair work:
Use the BMW Diagnosis System to perform the SCR adjustment.

Refer to:
- Service function
-> SCR systems
-> Carry out activation and adjustments