DR.EV Tesla Repair Toronto,Tesla Model X Headlight Not Working

👁️‍🗨️Overview

A Tesla Model X arrived at our service center with a non-functional right front headlight(Driver Side). The customer noted that the Daytime Running Light (DRL) and low beam on the driver's side were not working, while the passenger-side headlight was functioning normally. No warning lights or dashboard messages were present.

🔍 Symptoms & Visual Findings

• Right headlight (DRL and low beam) completely off

• No dashboard warning lights or fault codes

• Left headlight operating normally

• High beam function was not tested

During pre-repair inspection, only the driver-side (left) headlight is illuminated.

🧪 Diagnostic Procedure

Our technicians team performed the following steps:

1. Tested voltage at the right headlight connector

2. Verified continuity from the Body Control Module (BCM) to the headlight harness

3. Checked resistance and grounding path

4. Performed DTC scan of BCM system

🔧Findings:

1. No voltage output at headlight connector

2. BCM confirmed to be delivering signal correctly

3. Open circuit detected between BCM and headlight

4. Headlight assembly itself verified to be functional

   
   

OEM headlight tested outside the car confirms full DRL and beam function.

🛠️ Repair Process

After isolating the issue to the harness, we performed the following repairs:

1. Located and repaired a damaged wire segment inside the front body harness

2. Cleaned and reseated the BCM connector to ensure contact reliability

3. Power cycled the vehicle to reset control signals

4. Verified voltage output at the connector post-repair

Post-repair, both headlights operate normally with DRLs and low beams active.

✅ Post-Repair Verification

• Both DRL and low beam now fully operational

• No residual DTCs present in the BCM system

• Visual symmetry restored to the front lighting system

• Customer satisfied with the restored lighting performance

📝 Service Summary

Item	Detail
Vehicle	Tesla Model X
Complaint	One headlight(Driver side) not working
Cause	Open circuit in harness between BCM and headlight
Solution	Harness repair + BCM connector service
Duration	~2 hours
Outcome	Full lighting function restored

📍 Visit Us: 40 Doughton Rd, Concord, ON

📞 Tel: 647-866-9336 or 416-293-5566

💌 E-mail: repairtoronto@drevteslacareexperts.com