Mercedes-benz U11a600 Jun 2026

Moisture entry is the primary cause of actual radar system failures. The radar sensors sit behind the front bumper grill or inner corners of the rear bumper. These locations constantly face rain, puddles, and road salt. If the sensor housing seals degrade, water seeps into the unit, short-circuiting the internal circuit board and severing communication with the CAN bus. Physical Obstructions

Mercedes-Benz computer networks are highly sensitive to voltage drops. An aging main battery or auxiliary battery can trigger a cascade of false "U-codes" (network communication codes) upon starting the vehicle, as modules fail to wake up within their designated timeframes. Step-by-Step Troubleshooting and Resolution Clean the exterior panels and emblems. Clear physical blockages masking the radar sensor. 2 Check sensor voltage supply. Ensure the module is getting a steady 12V and solid ground. 3 Inspect the harness plug.

If you see these warnings, your car's radar-based safety features may be temporarily unavailable until the underlying issue is resolved. mercedes-benz u11a600

. However, this complexity brings unique diagnostic challenges, epitomized by fault code 1. The Anatomy of the Error

: If your power steering, cruise control, and braking systems function normally on the road, this fault code can be safely ignored . Mercedes recommends clearing the code; it does not restrict vehicle performance. 2. Radar Sensor Misalignment or Blockage Moisture entry is the primary cause of actual

Mercedes-Benz Model 247 (such as the B-Class, GLB) and related MFA2 platform vehicles equipped with lane keep assist or radar safety codes.

It's important to note that the U11A600 code can sometimes appear in conjunction with other fault codes and issues. For example, one owner of a 2021 GLA 250 reported this code alongside several EVAP system codes (P240727, P240000, P017F00), intake air system codes (P228097), and turbocharger issues (P024498), indicating a potentially wider set of vehicle concerns. If the sensor housing seals degrade, water seeps

A short circuit or damaged wiring harness related to the radar sensors.