Bosch 0261231110 Ignition Knock (Detonation) Sensor

Bosch Knock Sensor for Mercedes-Benz Engines

This Bosch ignition knock sensor helps monitor engine detonation so the ECU can adjust timing and protect the engine under load. Built to OE quality standards, it supports smoother operation and can help reduce fuel consumption on properly functioning Mercedes-Benz applications.

Key Features

• Bosch OE-quality ignition knock (detonation) sensor
• Helps detect abnormal combustion for engine protection
• Supports efficient ignition timing control and fuel use reduction
• Direct-fit replacement for select Mercedes-Benz models
• Part number 0261231110 for accurate catalog matching

Product Details

The Bosch 0261231110 knock sensor is an emission control sensor used by the engine management system to identify vibration patterns associated with detonation. When the sensor reports knock activity, the ECU can respond by adjusting spark timing to help protect the engine and maintain drivability. This Bosch ignition knock sensor is a fitment-based replacement for a wide range of Mercedes-Benz vehicles, including CL600, S600, S500, E500, ML500, SL500, and G55 AMG applications. This part cross-references Mercedes-Benz 0031538628 for the same application.

Compatible With 1996-2014 Mercedes-Benz CL600, N/A; 1996-2006 Mercedes-Benz S500, N/A; and 2003-2006 Mercedes-Benz E500, N/A, among many other Mercedes-Benz V8 and V12 models listed below. The Bosch 0261231110 is a practical choice when diagnosing knock sensor faults on Mercedes-Benz engines that rely on precise detonation feedback for calibration.

Common Issues This Part May Address

• Knock sensor fault codes
• Audible pinging or detonation under acceleration
• Reduced engine performance from timing retard
• Rough running caused by inaccurate knock detection
• Fuel economy loss related to incorrect ignition control

Installation Notes and Tips

Verify the part number and vehicle application before installation. Because knock sensor access can vary by engine layout, inspect the harness, connector, and mounting surface during replacement. Clear diagnostic trouble codes after installation and confirm the repair with a scan tool and road test.

Quality Assurance

Bosch supplies OE-quality sensors engineered for accurate engine protection and consistent signal response. The brand’s knock sensor design is intended to support reliable detonation monitoring and efficient engine management on Mercedes-Benz applications.