B10AE

Code

LAND ROVER B — Body

Headlight leveling motor

Brand: LAND ROVER

Type: B — Body

Views: UK: 16 EN: 30 RU: 19

AI status

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Page language: EN

Causes

Failed/headlight leveling motor
Open/short or poor wiring connection to motor
Corroded or loose connector or terminal
Blown fuse or faulty relay supplying the motor
Mechanical binding or seized adjustment mechanism
Faulty body control module or headlamp control module

Symptoms

Automatic or manual headlight leveling not working
Headlamp aim stuck at one position (too high or low)
Warning message or indicator related to headlamp leveling on dash
Uneven headlight beam alignment or glare to other drivers
DTC B10AE stored in body/headlamp control module memory

What to check

Read and record stored codes and freeze-frame data with a compatible scan tool
Visually inspect headlamp leveling motor, linkage and connectors for damage, corrosion or water ingress
Check relevant fuses and relays for continuity and proper operation
With ignition on, use a scan tool to command the leveling motor; observe motor movement and live data
Measure supply voltage and ground at the motor connector while commanding the motor
Measure motor coil resistance and compare to manufacturer data or expected low-ohm range

Signal parameters

Motor supply voltage when commanded: ~11–14 V (battery voltage)
Ground continuity to chassis: near 0 Ω when tested
Motor coil resistance (typical expected): low-ohm range (approx. 5–50 Ω) — consult vehicle data for exact value
Activation current draw: motor should draw noticeable current when commanded (often ~0.5–3 A)
Position/feedback sensor signal (if fitted): variable voltage typically within 0.5–4.5 V range depending on angle

Diagnostic algorithm

Connect a compatible diagnostic scanner and record all stored codes; note freeze-frame data. Clear codes and attempt to re-run test to confirm repeatability.
Perform a visual inspection of headlamp area, leveling motor, connectors and wiring for damage, corrosion or water ingress.
Check related fuses/relays; replace any blown fuse and test relay function.
Using the scan tool, command the headlight leveling motor and observe whether the motor moves and if live data changes. Note any errors returned by the module when commanding the motor.
If motor does not operate, backprobe motor connector while commanding the motor: verify battery voltage present at supply pin and good ground on return pin. No voltage indicates wiring/fuse/relay/module issue.
Measure motor coil resistance with ignition off and connector disconnected; compare to specification. Very high/OL indicates an open coil; very low/short indicates internal short.
If wiring and supply are good but motor does not operate or draws excessive current, remove motor and bench-test with a controlled 12 V supply to confirm operation and mechanical freedom. Replace if faulty.
Inspect and operate leveling linkage and ride-height sensors for binding or incorrect geometry. Free or replace binding components as needed.
If motor and wiring test good, inspect module outputs and grounds. Test or swap module (if supported and safe) or check module wiring harness for intermittent faults.
After repairs, reassemble, clear codes, perform headlamp leveling calibration/adaptation procedure as per manufacturer, and re-check system operation and codes.

Likely causes

Failed leveling motor (wear or water ingress)
Damaged or corroded connector/wiring at the motor
Mechanical binding of the leveling linkage
Blown fuse or faulty relay supplying the motor
Faulty control module or module output driver

Fault status

⚠️ Status

Headlight leveling motor fault detected — inspect motor, wiring/connectors, fuses/relay, linkage and level sensors; perform activation and voltage checks.

🟡 Repair difficulty: Medium

⏱️ Diagnostic time: 0.5-2.0 hours

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