DIAGNOSING TESLA ISSUES AND MAINTENANCE WITH MATT LAMONTAGNE OF LEO AND SONS EV REPAIR

EV Channels Review

This video provides an in-depth look at diagnosing and maintaining Tesla vehicles, specifically focusing on a 2013 Model S experiencing intermittent power loss. Master Technician Matt Lamontagne of Leo & Sons EV Repair highlights the unique challenges of working with Tesla's proprietary software (Toolbox 3) and the need for creative approaches compared to traditional manufacturers. The discussion covers the process of dropping the battery pack for visual inspection, identifying components like rapid mate coolant connections, and the function of low and high voltage connectors. Lamontagne also details the rear drive unit, noting it's a single motor with an integrated inverter for RWD models, and touches upon the steering rack's origin from a Land Rover. He emphasizes the importance of coolant and brake maintenance, even with regenerative braking. The core issue identified on the featured Model S is not a battery cell problem, but rather a fault with the contactors or large relays that connect the battery to the rest of the system. The review underscores Leo & Sons' expertise in high-voltage EV systems, accumulated over years of working with hybrids and early EVs like the Nissan Leaf.