BMW E90 Yaw Rate Speed Sensor 34526762769 - Used Original Parts

Diagnosis and Common Symptoms

As the core component of the Dynamic Stability Control (DSC) system, the yaw rate sensor measures the vehicle's rotational velocity around its vertical axis. Failure of this sensor is a common issue on the E90 platform, leading to a complete deactivation of the traction and stability control systems.

Technicians will typically diagnose a faulty sensor by observing the "trifecta" of warning lights on the instrument cluster: the ABS, BRAKE (in yellow), and DSC/4x4 warning lights will illuminate simultaneously. Diagnostic scanning will reveal specific fault codes stored in the DSC module, most commonly:

• 5E20: Pressure Sensor 1 Failure
• 5E21: Pressure Sensor 2 Failure
• 5E24: Pre-charge Pump / Pressure Sensors Plausibility
• 5DF0: DSC-ECU: Pump Motor
• 5DF1: DSC-ECU: Pump Motor Connector faulty

These codes often mislead technicians to suspect the ABS pump, but the root cause is frequently an internal failure of the yaw rate sensor assembly, which also houses the pressure sensors.

Introduction

Restore your vehicle's critical safety systems with a Genuine BMW Yaw Rate Speed Sensor from M.S. Motor. Each unit is carefully salvaged and subjected to rigorous bench and on-vehicle testing by our senior technicians to guarantee full functionality. This component offers a dependable and cost-effective alternative to a new part, ensuring your BMW's DSC system operates precisely as engineered.

Product Details

• Brand: BMW

• Model Compatibility: E81, E82, E84 (X1), E87, E88, E90, E91, E92, E93

• Part Name: DSC Yaw Rate / Rotational Speed Sensor

• Condition: Genuine Used (Tested Working)

• Notes: This sensor is located under the front driver or passenger seat, beneath the carpet. It is highly susceptible to water damage from clogged sunroof drains or window seal leaks. Ensure the area is dry before installation.