Fitment notes: Battery located in trunk on right side; smaller BCI Group 35 due to trunk mounting location
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Every control module on the 1993-1998 Toyota Supra MK4 — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
Anti-lock Brake System Control Module (ABS ECU)2.0 hr R&Rno coding
📍 Engine bay, driver side near brake master cylinder (integrated with hydraulic unit)
⚠️ Integrated with hydraulic actuator; bleeding procedure required after replacement; early 1993 models may lack ABS
Air Conditioning Amplifier (A/C AMP)1.5 hr R&Rno coding
📍 Behind center dash, above or integrated with climate control panel
⚠️ Controls automatic climate control functions; manual A/C models use simpler non-electronic controls
📍 Behind instrument cluster or center console area
🔧 Toyota Hand-Held Tester / Techstream
⚠️ Only on 1997-1998 models with factory immobilizer; key registration required; earlier models have no immobilizer
Combination Meter (METER)0.8 hr R&Rno coding
📍 Instrument panel, behind gauge cluster
⚠️ Odometer is stored in cluster; replacement changes mileage unless EEPROM is transferred (specialist service)
Audio System (RADIO)0.5 hr R&Rno coding
📍 Center dash, DIN-style radio cavity
⚠️ May require radio code entry after battery disconnect; code typically on card in owner's manual or retrievable from serial number
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 1994 Toyota Supra MK4 3.0L I6 Twin Turbo 2JZ-GTE and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.