The 2003 Toyota 4Runner has 4 recalls, the most serious being a fuel leak risk on V6 models where a damaged diaphragm inside the fuel rail's pulsation damper can allow gasoline to escape near engine heat sources, creating a fire risk in the engine compartment.
A separate safety concern involves the accelerator pedal, which can become stuck at full throttle if the driver's floor mat is unsecured or incompatible with the vehicle. With the pedal pinned wide open, the vehicle can reach very high speeds and become difficult to slow or stop, raising the risk of a crash. On the wheel side, this recall applies only to vehicles that received a four-wheel alloy upgrade through Southeast Toyota Distributors at the Jacksonville, Florida port. If the spare tire from that upgrade package is mounted using the wheel nuts provided with the upgrade wheels rather than the correct nuts for the vehicle, the wheel can be damaged over time and eventually work loose while driving.