LCM Alert Validation

Confidence

Failure Category

Lighting

Subcategory

Lighting - Failed Light

Sensor Verdict: The LCM sensor correctly flagged a defect on the RED (Brake) circuit with high confidence. The technician confirmed the third brake light was inoperative, and further diagnosis showed power was present at the harness, isolating the fault to the light unit itself. This is a textbook light failure scenario that the LCM system is designed to detect, and the alert aligns precisely with the confirmed defect.

Photo Evidence: The single photo provided (MUDFLAPS.jpeg) shows a detached or displaced mudflap resting against a concrete curb beneath the trailer's dual rear axle tires. This photo is entirely irrelevant to the reported RED circuit / brake light defect. There are no photos of the failed third brake light, no photos of the replacement light illuminated, no nosebox wiring photos, and no TechAssist app screenshots. Photo documentation is wholly absent with respect to the actual lighting defect and repair.

Vendor Compliance: The vendor did not follow the LCM troubleshooting procedure as instructed. There is no evidence that the Phillips Connect TechAssist (PCT) app was used at any point during diagnosis or verification. No illuminated circuit photos were provided for any of the five circuits, and no nosebox photo was submitted. The vendor notes, while mechanically descriptive and coherent, do not reference the TechAssist app or provide any of the required verification screenshots showing green 'Verified' status beside each circuit. This represents a significant compliance gap.

Repair Summary: The repair itself appears appropriate and complete. The technician removed the failed third brake light by drilling out rivets, confirmed power at the harness, replaced the bad light with a new unit, and re-secured it to the trailer with new rivets. The technician also reports performing a walk-around check of all trailer lights post-repair. No line items were submitted, which raises a concern about parts traceability — there is no record of the replacement light's part number, brand, or whether it is a compliant (e.g., Truck-Lite or approved equivalent) LED unit.

Key Concerns: Several issues warrant attention: (1) The only photo submitted depicts a mudflap displacement and has no relevance to the brake light repair — it is unclear whether this was submitted in error or reflects a secondary unreported defect. (2) No parts line items were submitted, making it impossible to verify the brand or compliance of the replacement light. (3) The PCT app was not used, and no verification screenshots were provided, leaving the post-repair circuit health unconfirmed through the LCM system. (4) The mudflap photo may indicate an additional unreported defect (displaced/damaged mudflap) that was not addressed or documented as a separate repair. Vendor should be required to resubmit with proper PCT app verification and illuminated light photos.