2013 MITSUBISHI I-MIEV

Typical onset: 50,000-90,000 mi

Symptoms: Hard brake pedal requiring excessive force, Brake warning light and/or vacuum pump error codes, Audible vacuum pump running continuously or cycling excessively, Loss of power assist making emergency stops dangerous

Fix: Replace electric vacuum pump assembly and check valve; often requires bleeding the entire brake system. NHTSA recalled this twice (14V-320 and 15V-527) but many units still fail post-recall. 3-4 hours labor including diagnostic and bleed procedure.

Estimated cost: $800-1,400

Symptoms: Usable range drops below 40 miles on full charge, Battery capacity bars on dash decrease (original 16 bars), Rapid state-of-charge drop under acceleration or cold weather, Charging completes faster than it used to

Fix: LEV50N cells degrade faster in hot climates or with repeated fast-charging. Battery replacement is 8-10 hours labor but used packs run $3,000-5,000; new OEM discontinued. Some owners retrofit Chevy Bolt cells but this voids any remaining warranty and requires custom BMS work (15+ hours). No economical fix exists.

Estimated cost: $6,000-12,000

Typical onset: 70,000-110,000 mi

Symptoms: Pink coolant puddle under front of vehicle, Reduced power or turtle mode in hot weather, Inverter overtemperature warning on dash, Coolant reservoir level dropping without visible external leak

Fix: Electric motor and inverter share a sealed coolant loop separate from cabin heat. Hoses crack, reservoir tank seams fail, or motor inlet O-rings weep. Diagnosing the exact leak point takes 1-2 hours; motor removal for internal seals is 6-8 hours. Front subframe must come down for motor access, adding complexity.

Estimated cost: $400-2,200

Symptoms: Car won't enter READY mode even with main pack charged, Dash lights flicker or fail to illuminate, Key fob stops working, doors won't unlock, Clicking from under hood when pressing power button

Fix: Small 12V lead-acid battery (same concept as Prius) powers all computers and contactors. Lasts 3-5 years typical. Unlike ICE cars, a dead 12V leaves you stranded even with a full traction battery. Replacement is 0.5 hours, located under hood passenger side. Use AGM battery only—flooded cells fail faster.

Estimated cost: $200-350

Typical onset: 60,000-100,000 mi

Symptoms: No cold air or intermittent cooling, Electric compressor not engaging (no clicking sound), Musty smell or moisture on passenger floor, Reduced driving range due to compressor cycling constantly

Fix: Electric AC compressor seals leak refrigerant or compressor fails internally; evaporator core corrosion also documented. Evaporator requires full dash removal (10-12 hours labor). Compressor replacement is easier at 3-4 hours but unit costs $800-1,200. TXV replacements common during evap jobs.

Estimated cost: $1,200-3,500

Symptoms: DC fast chargers won't initiate charge (AC Level 2 still works), Error message on charger screen about communication failure, Charge port door won't unlock or latch properly, Burned or corroded pins visible in CHAdeMO inlet

Fix: Inlet pins corrode from weather exposure or arc damage from loose connections. Entire charge port assembly often needs replacement including wiring harness back to battery controller. 4-5 hours labor, parts are $600-900. Preventive: keep dust cap on and inspect pins annually.

Estimated cost: $1,000-1,800