Mercedes ML250 W166 Power Boot Malfunction + Blank Android Screen & Mirror 360 Camera Repair Part 1.

In today's video Part One , we troubleshoot a 2014 Mercedes-Benz ML 250 BlueTEC (W166) dealing with multiple electrical issues: a non-functional electric power liftgate/tailgate, a customer complaint regarding a blank aftermarket screen with no audio following a mechanical service, and a damaged passenger side mirror affecting the 360-degree camera feed. Join Dimitris from Vehicle Aftermarket Installations On Site as we walk step-by-step through professional diagnostics, battery health testing, motor bench checks, and mirror restoration. 📌 CHAPTER TIMESTAMPS: 0:00 - Introduction: Mercedes-Benz ML250 BlueTEC Liftgate Issues 0:42 - Rear Fuse Box Inspection (Under Rear Seat) & 12V Fuse Testing 1:35 - OBD2 Diagnostics with TOPDON Phoenix Plus (Fault Codes Scan) 2:30 - Mercedes Battery Health & Cranking Test (Under Front Seat) 3:55 - Power Liftgate Spindle Motor Harness & Resistance Bench Test 4:55 - Solving the "Blank Aftermarket Screen" & Missing Audio Issue 5:50 - Inspecting the Damaged Right Side Mirror & Disassembly 6:45 - Repairing Broken Mirror Clips & Aligning the 360° Camera 7:50 - Reassembly & Final System Testing (Cameras, Blind Spot & Power Controls) 8:25 - Conclusion & Next Steps (Part 1) 🔧 DIAGNOSTIC STEPS & HIGHLIGHTS: 1. Liftgate Fuse Verification: Checking 5A (106) and 40A (154) fuses located in the rear auxiliary fuse panel using an incandescent test light. 2. Full ECU Smart Scan: Using the TOPDON Phoenix Plus to identify the liftgate open circuit code and CAN bus communication errors. 3. Auxiliary & Starting Battery Test: Why battery condition matters before trusting diagnostic codes—testing an AGM 850 CCA battery showing degraded health. 4. Spindle Motor Diagnosis: Direct bench testing using a multimeter and 12V power supply to verify motor open circuit/failure. 5. Aftermarket Screen Reset: Simple fix for blank OEM menus and audio loss after battery disconnects on NTG systems. 6. Side Mirror & 360° Camera Repair: Rebuilding broken inner mounting tabs and realigning the misaligned side camera housing without replacing the entire mirror assembly. --- 👍 If this guide helped you diagnose your Mercedes-Benz electrical issues, make sure to like, comment, and subscribe for more in-depth automotive diagnostics, dashcam installations, and tech guides! Vehicle & Platform: Mercedes-Benz, Mercedes ML250, W166, ML350, Mercedes BlueTEC, Mercedes Tailgate Malfunction Tailgate & Actuator: power liftgate repair, trunk lid motor open circuit, electric boot strut failure, spindle motor diagnosis, Mercedes rear fuse box Diagnostic Tools: TOPDON Phoenix Plus 2, Battery health test, AGM 850 CCA test, multimeter testing automotive, 12v incandescent test lamp Screen & Camera Fixes: aftermarket head unit blank screen, CarPlay no sound Mercedes aux, Mercedes 360 camera alignment, side mirror housing repair #MercedesBenz #W166 #AutoElectrician #VehicleDiagnostics #TOPDON #CarElectronics #MechanicTips