Independent shop. ASE L3 certified. Tesla-Approved. The Portland operation Intel engineers send their Model 3 to.
National certification for hybrid + electric vehicle diagnosis, service, and repair. Annual recertification required.
National certification for electrical-system diagnosis on light vehicles. Voltline staff hold both A6 and L3.
All Voltline technicians wear IEC 60900 high-voltage-rated insulating gloves for any work above 60 V DC.
Voltline holds Tesla-Approved Service status for non-warranty work on Model S, X, 3, and Y vehicles.
Voltline is a deep-niche operation. We rebuild traction batteries, repair drive units, service inverters and on-board chargers, and diagnose high-voltage subsystems on hybrid + PHEV + BEV platforms. That is the entire service catalog. We do not do body work. We do not do alignment. We do not do internal-combustion engine repair. We do not do general mechanical service.
When a customer car needs something outside that scope, we refer it to a shop that does it well. Honest specialization is the only way to be deeply good at one thing — and module-level Tesla pack repair, cell-level battery rebalancing, and Toyota hybrid transaxle work are the things we are deeply good at.
NiMH and Li-ion pack rebuilds. Inverter service. Transaxle hybrid drive unit repair. All Prius generations, Lexus hybrid (CT, ES, GS, IS, LS, NX, RX, UX), Toyota Camry / Avalon / Highlander / Sienna / RAV4 hybrid.
Battery pack diagnostics + module replacement. Drive unit repair. PCS and on-board charger service. MCU and body-control module diagnostics. Cell-level scans delivered as 7-page PDF reports.
Chevrolet Bolt (LG Chem), Nissan Leaf (24 / 30 / 40 / 62 kWh), Ford Mach-E + Lightning, Rivian R1S / R1T, Hyundai Ioniq + Kia EV6, BMW i3, Audi e-tron — battery and drive-unit work only; body work referred out.
When the Prius dashboard throws the hybrid-battery warning, the Toyota dealer sells you a refurbished pack from Toyota's national core-exchange program. That pack was rebuilt — using the same process we use, in a smaller scope. We rebuild yours directly. Faster. For 30–45% of the dealer price. With a 36-month warranty on every module we replace.
Our process is module-level: we isolate each of the 28 modules in a 3rd-gen Prius pack, load-test each on a controlled discharge bench, and replace only the modules that fail. Typical failure pattern: 2–6 weak modules out of 28. After replacement we rebalance the pack to factory-spec tolerance (typically ±10 mV across all cells) and run a 14-mile verification drive.
The dealer sells you a pack. We rebuild your pack. That is the difference.
Priya spent four years as a senior technician at the Tesla Portland Service Center. The capabilities Voltline kept from that period are exactly the capabilities Tesla owners cannot get from the Tesla Service Center on a 14-day backlog: full BMS diagnostic, module-level pack repair, drive unit rebuild, MCU eMMC repair.
Module-level pack repair is the wedge. The Tesla Service Center, on a non-warranty pack fault, will quote a full-pack replacement at $14,000–$22,000. We diagnose the actual failed module — typically one of 24 modules on a Model 3 LR pack — and replace it for $2,400–$4,200. Same warranty period. Same end result. A fraction of the cost.
Our standard turnaround is 24–72 hours for diagnostic, 3–7 days for repair. Tesla-Approved Service status. ASE L3 certified.
I work on memory controllers for a living. When my Model 3 threw a BMS_w048 code, I needed someone who could actually explain to me — at the cell-and-module-resistance level — what was happening. The Tesla Service Center said 14 days for a diagnostic. Priya at Voltline got me an appointment in 36 hours and her diagnostic report was a 7-page PDF with cell-level resistance scans. She rebalanced the pack. The code has not returned in 8 months. — Dr. A. Volkov · Principal Engineering Manager, Intel · 2019 Tesla Model 3 LR · Voltline customer since Oct 2024
Google · ★★★★★
"Diagnosed the M3 LR low-voltage 12 V battery fault the Tesla SC kept misdiagnosing as a BMS issue. Pulled the BMS error log, found the actual wake-cycle fault in 90 minutes. Tesla had been on it for 11 days with no result."
— J. Chen · Staff Eng. · 2019 Model 3 LR
Tesla Motors Club · ★★★★★
"Rebuilt the 2011 Prius pack for $1,540 — Toyota wanted $4,200 for a 'refurb pack' that was the same process at 3x price. Pack rebalanced to ±8 mV. MPG back to 47."
— R. Hwang · Beaverton · 2011 Prius
RepairPal · ★★★★★
"Found the Leaf 30 kWh degraded-cell module Nissan couldn't diagnose under warranty. Pack health went from 71% back to 84% after the swap. Honest pricing on diagnostic and no upsell."
— S. Lindgren · 2016 Nissan Leaf
4.9 stars · 312 Google reviews · ~340 active hybrid + EV customers
Voltline serves the Portland metro: Portland, Beaverton, Hillsboro, Tigard, Lake Oswego, West Linn, Tualatin, Sherwood, Gresham, and Vancouver WA. Tesla customers regularly drive in from Salem, Eugene, and Bend for module-level repair.
(503) 555-0184