Tesla Battery Repair & BMS Diagnostics in Signal Hill
Expert high-voltage battery repair, cell-level diagnostics, and BMS restoration for Tesla Model S, 3, X, Y, and Cybertruck — done right, at a fraction of dealer cost.
Inside a Tesla Battery Repair
From full pack removal to cell-level BMS inspection — every job gets the precision it deserves.
How We Repair Your Battery
A systematic, data-driven approach — from initial scan to road-ready delivery.
Full Diagnostic Scan
We connect Tesla Toolbox and PEAK PCAN diagnostics to read every BMS fault code, cell voltage, and thermal deviation across all modules.
Pack Removal & Teardown
Using specialized HV lift equipment, we safely remove the 1,200 lb battery pack and disassemble it in our HV-specialized service bay.
Cell-Level Inspection
Each of the 7,000+ cells is tested individually. We identify resistive, degraded, or failed cells — down to the brick level.
Module Repair or Replacement
Failed modules are repaired or replaced with matched-spec units. We restore cell balance, re-seal coolant channels, and validate all connections.
BMS Recalibration
After reassembly, the BMS is fully recalibrated via Tesla Toolbox, pyrofuse tested, and all CAN bus communication verified.
Road Test & Sign-Off
A full charge cycle, performance validation, and road test completes the process. You receive a detailed report of all work performed.
Expertise Other Shops Don’t Have
Most shops replace the entire pack. We go to the cell and BMS level — saving you thousands.
We use Tesla Toolbox 3 and PEAK PCAN adapters for professional-grade diagnostics — the same tools Tesla technicians use.
Salvage-title Tesla? We can restore Supercharger access — a specialty service almost no shop in Signal Hill offers.
Tesla charges $15,000–$22,000 for a full pack swap. Where the pack allows, we repair at cell and module level instead of swapping the whole pack. You get a written estimate before any work starts.
We work with all major insurance companies and handle the paperwork — just bring your car in.
What We Fix
From simple error codes to complex cell failures — we handle the full spectrum of Tesla battery issues.
BMS Fault Repair
HVIL faults, pack contactors, isolation faults, CAN bus errors. We diagnose and resolve BMS issues without guesswork.
Cell-Level Diagnostics
Individual cell voltage mapping, resistance testing, and capacity measurement across all 16 battery modules.
Coolant System Repair
Thermal management leaks, coolant contamination, and pump failures — fully pressure-tested and flushed.
Pyrofuse Replacement
Safe removal and replacement of blown pyrofuses with correct factory-spec components and BMS reset.
Supercharger Restoration
Restore Supercharger access on salvage-titled or repaired-status Teslas. Rare capability — we have the tools and process.
Range & Capacity Recovery
Reduced range due to degraded cells? We isolate, replace, and rebalance to recover your original range performance.
Transparent Pricing
Fair rates for expert Tesla battery and EV drivetrain work
Full diagnostic, cell-level inspection, module repair or replacement, BMS recalibration, and road testing included.
Complete motor diagnostics, bearing replacement, inverter repair, and performance testing to factory specifications.
High-voltage contactor diagnostics and replacement with OEM-quality parts. Same-day service available.
Battery Capacity Upgrade
Want more range from your Tesla? We can replace your low-capacity battery pack with a higher-capacity one. Upgrade your 70 kWh pack to 85 kWh or even 90 kWh for significantly more miles per charge.
- ✅ More Range Per Charge
- ✅ Better Resale Value
- ✅ OEM-Compatible Packs
- ✅ Full BMS Recalibration
Warranty Included
All battery repairs come with a service warranty for your peace of mind.
Fast Turnaround
Most repairs completed in 3–5 business days. Same-day diagnostics available.
Save vs. Dealer
Component-level repair is normally far cheaper than a full dealer replacement. You get a written estimate before any work starts.
Get a Free Battery Estimate
Send us photos of your Tesla’s diagnostic screen or describe the issue — we’ll give you an honest assessment, fast.
Serving Signal Hill, Long Beach, Lakewood, Carson, Torrance and Greater Los Angeles — 1030 E Willow St, Signal Hill, CA 90755.
