FITMENT:
Compatible with Mercedes-Benz diesel vehicles equipped with SCR (AdBlue/DEF) Euro 5 / Euro 6 systems, including:

• Sprinter W906 / W907 (select SCR diesel engines)
• Vito / V-Class W447
• C-Class W205 / S205 / C205 / A205
• GLC X253 / C253
• GLK X204
• Some W447 commercial diesel variants using SCR system

OEM / Cross reference numbers:

• A0009059603 / A 000 905 96 03
• 5WK96681E / 5WK9 6681E
• 0009059603
• 70680216 / BNX74004 (aftermarket equivalents in some catalogs)

SOURCE CONFIRMATION:
This NOx sensor is a direct replacement for Mercedes-Benz SCR systems and is widely used across Sprinter, Vito, and passenger diesel models.

It is part of the Continental smart NOx sensor platform, integrated into Mercedes SCR emission systems for Euro 6 compliance.

FUNCTION:

• Measures nitrogen oxide (NOx) levels in diesel exhaust
• Sends data to ECU via CAN communication
• Controls AdBlue (DEF) dosing in SCR system
• Monitors catalyst efficiency
• Ensures Euro 5 / Euro 6 emissions compliance

INSTALLATION POSITION:

• SCR inlet or outlet sensor (depends on vehicle configuration)
• Mounted on exhaust line before or after SCR catalyst
• Common on Sprinter/Vito dual-sensor SCR systems

IMPORTANT NOTE:
A0009059603 / 5WK96681E belongs to a widely shared Mercedes SCR NOx sensor family, meaning:

• Same sensor used across multiple platforms (Sprinter, Vito, GLC, C-Class)
• Inlet and outlet sensors are NOT interchangeable
• ECU calibration determines correct usage
• Wiring length and bracket may vary by model

Incorrect installation may cause SCR faults, AdBlue errors, or limp mode.

FAQ:

Q1: What vehicles does it fit?
A1: Sprinter W906/W907, Vito W447, C-Class W205, GLC X253 and related SCR diesel models.

Q2: Is it inlet or outlet sensor?
A2: It can be inlet or outlet depending on SCR system configuration.

Q3: What are failure symptoms?
A3: SCR warning light, AdBlue fault, engine derate, NOx sensor error codes, limp mode.

Q4: Are A0009059603 and 5WK96681E the same?
A4: Yes, 5WK96681E is the Continental OEM reference for Mercedes A0009059603.

Q5: Does installation require coding?
A5: Some Mercedes models require SCR reset or ECU adaptation after replacement.