LCM Alert Validation

Confidence

Failure Category

Lighting

Subcategory

Lighting - Failed Light

Sensor Verdict: The LCM sensor alert on the RED (Brake) circuit is validated as a true defect with high confidence (92%). The technician's notes directly corroborate the alert — the 3rd brake light (auxiliary/center high-mount stop lamp, described as a 'FLASHING AUX STROBE STOP') was found to have power at the fixture but the lamp itself had failed. This is a textbook light failure scenario on the brake circuit, and the sensor correctly flagged a real hardware defect rather than a wiring or connectivity issue. The one small uncertainty holding confidence below 100% is the absence of photographic or TechAssist app confirmation to independently verify the pre- and post-repair circuit state.

Photo Evidence: No photos were provided with this work order. There are no images of the failed 3rd brake light prior to removal, no photos of the replacement lamp installed and illuminated, no documentation of the nosebox wiring condition, and critically, no TechAssist app screenshot showing green 'Verified' status across all five circuits. This is a complete gap in documentation compliance. Without photos, the reviewer must rely entirely on technician narrative, which, while coherent and detailed, cannot be independently verified. The absence of photo evidence is a significant documentation deficiency for an LCM-generated work order.

Vendor Compliance: The vendor (TA / technician JLC) did not follow the LCM troubleshooting procedure as instructed. There is no indication the Phillips Connect TechAssist app was used at any point during diagnosis or post-repair verification. The required TechAssist completion screenshot showing green 'Verified' beside each of the five circuits was not submitted. No photos of each illuminated light were provided, and no clear nosebox wiring photo was included. The technician did note checking the nosebox and confirming all wires were tight and had correct power, which partially addresses that requirement in narrative form, but this does not substitute for the photographic and app-based documentation required. Vendor compliance with the LCM procedure is rated as poor.

Repair Summary: The repair correctly addressed the alerting RED (Brake) circuit. The failed 3rd brake/aux strobe stop light was identified on the initial visit; the part was ordered (FLASHING AUX STROBE STOP, $160.64) and installed on a return visit. The old light was removed by drilling out rivets, and the new light was secured with 1/4" AVEX blind rivets — a proper mechanical reinstallation method. A full lights functional test was performed post-repair and all circuits were reported as working. One concern is a line item for 'R&R 1 MARKER/CLEARANCE LIGHT' with associated labor, suggesting a secondary marker/clearance lamp was also replaced during the same visit. This is not mentioned explicitly in the technician notes, which focus solely on the 3rd brake light, leaving the marker lamp repair underdocumented. There is also an unexplained line item for an 'AMAZON PCT SENSOR ACTIVATION' part under the tire/TPMS category, which appears unrelated to the lighting repair and may be a billing anomaly or error.

Key Concerns: Several flags warrant attention from the fleet maintenance reviewer. First, the 'AMAZON PCT SENSOR ACTIVATION' line item under TPMS/speed sensor is entirely unrelated to a lighting work order and has no explanation in the technician notes — this should be audited for potential billing error or wrong-WO charge. Second, the marker/clearance lamp R&R line item is not discussed in the technician narrative; if a second light was genuinely replaced, it should be documented. Third, the complete absence of TechAssist app usage and photos represents a process compliance failure — the vendor was explicitly instructed to use the app and provide verification screenshots, neither of which was done. Finally, the labor coding includes both 'STANDARD SERVICE LABOR' and 'STANDARD SERVICE LABOR B' on the same line item category, along with a 'LOT SERVICE HOURLY LABOR' coded as Warranty, which may indicate billing irregularities that warrant review.