Headlight Leveling Sensor Circuit Malfunction
The B0053 code means the vehicle's onboard diagnostic system has detected: Headlight Leveling Sensor Circuit Malfunction. This is a moderate severity code.
- Keep driving?
- Yes, but fix soon
- DIY difficulty
- moderate
- Estimated cost
- $100 - $500 (parts and labor)
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Common Symptoms
- Headlights aimed too high or too low
- Headlight leveling warning on dash
- Headlight auto-leveling not functioning
- Oncoming drivers flashing their lights at you
- Headlights do not adjust when vehicle is loaded
Probable Causes (Ranked by Likelihood)
- Failed headlight leveling sensor on suspension Very High
- Damaged sensor linkage or mounting bracket High
- Corroded wiring to leveling sensor Moderate
- Headlight leveling control module failure Low
Step-by-Step Diagnostic Procedure
-
Scan for headlight leveling system DTCs
-
Check leveling sensor mounting and linkage at suspension
-
Test sensor output signal through range of motion
-
Inspect wiring and connector at leveling sensor
-
Test headlight leveling motor operation
Frequently Asked Questions
What is the headlight leveling system?
It automatically adjusts headlight aim based on vehicle load and pitch. When the rear is loaded down, the system tilts the headlights down to prevent blinding oncoming drivers.
Where is the headlight leveling sensor?
It is typically mounted on the rear suspension, connected to a control arm or axle by a small linkage rod. Some vehicles also have a front sensor.
Can misaimed headlights fail an inspection?
Yes. Many states check headlight aim during safety inspections. If the auto-leveling system has failed and the headlights are aimed incorrectly, the vehicle may not pass.
Sources
This page is built from documented references. Verify against your own service info before repair work.
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