Mercedes Sprinter Left Rear ABS Wheel Speed Sensor – GST | NCV3 2500 / 3500 | #9069050801 (2010–2018)

A failed left rear ABS wheel speed sensor on a NCV3 Sprinter removes the rear left wheel speed reference the ABS, traction control, and stability control systems depend on — illuminating the ABS, TCS, and ESP warning lights simultaneously and disabling the safety systems that prevent wheel lockup and loss of control under hard braking or in slippery conditions. This is the GST left rear ABS wheel speed sensor for NCV3 Sprinters, a direct replacement that restores accurate left rear wheel speed measurement and full ABS system function.

What This Part Does

The rear ABS wheel speed sensor is a Hall-effect sensor mounted at the rear axle that reads the teeth of a reluctor ring rotating with the wheel hub, generating a digital pulse train proportional to wheel rotational speed. The ABS control module monitors this signal continuously — when one wheel begins decelerating faster than the others during a hard stop, indicating impending lockup, the module modulates brake pressure on that wheel to maintain rolling traction and controlled stopping. The same signal feeds the traction control system (TCS) and electronic stability program (ESP) to detect rear wheel slip during acceleration and cornering. When the sensor's Hall-effect element fails, its wiring corrodes at the connector, or the sensor body physically cracks from road impact, the ABS module loses its speed reference for the left rear wheel and disables the entire ABS/TCS/ESP system as a safety measure.

Common Symptoms of a Failing Left Rear ABS Sensor

• ABS, TCS, and ESP warning lights illuminated simultaneously
• ABS fault codes for the left rear wheel circuit confirmed by scan tool
• ABS activating during normal stops where it should not — erratic sensor output
• No ABS activation during hard braking where it should engage
• Loss of traction control response on slippery surfaces

When to Replace

Replace when the sensor is confirmed faulty by scan tool with active left rear ABS wheel speed sensor fault codes, after ruling out the reluctor ring and wiring harness as the fault source.

NCV3 Specific — VIN Verification Required

This is the left rear ABS sensor for NCV3 Sprinters. Sensor configurations may vary by rear axle code — always verify by VIN and axle specification before ordering. Contact us and we'll confirm fitment before you buy.

Fitment

• 2010–2018 Mercedes-Benz Sprinter 2500 – Rear left (NCV3/W906)
• 2010–2018 Mercedes-Benz Sprinter 3500 – Rear left (NCV3/W906)
• 2010–2018 Freightliner Sprinter 2500 / 3500 – Rear left (NCV3)

✔ Left (driver) rear only — right rear requires #9069050901
✔ Always verify rear axle code and VIN before ordering

Part Numbers

• Mercedes OEM: 9069050801 / A9069050801 / 906-905-08-01
• Manufacturer: GST — 756871-SET1
• SKU: 9069050801