Toyota 4Runner: Common Problems, Fault Codes & Repairs Everything for the Toyota 4Runner in one place — its common problems and reliability, the fault codes owners see most, and the tools to diagnose them. Toyota 4Runner specs & capacities Toyota 4Runner — Fuse box location & guideToyota 4Runner — Oil capacity & typeToyota 4Runner — Tire pressureToyota 4Runner — Towing capacityToyota 4Runner — Bolt pattern & wheel sizes Recommended tools Automotive MultimeterCompression TesterBattery & Charging System Tester Read your code: OBD-II scanners →