Lexus GX470 throttle body not responding to accelerator input after replacement on Lexus GX470

Some Lexus GX470 owners report experiencing unresponsive throttle issues after replacing the throttle body, which may indicate a need for a throttle relearn procedure. Failing to perform this procedure can lead to engine performance problems, as the throttle body regulates the air entering the engine. Symptoms of incorrect programming include rough engine operation, poor acceleration, and overall performance issues. Additionally, some owners find it necessary to check the throttle position sensor, which is essential for monitoring the throttle plate position in relation to accelerator input. If further complications arise, repair costs can vary significantly, with simple fixes like cleaning or recalibrating the throttle body costing between $100 to $200, while replacing the throttle position sensor may range from $150 to $300, plus labor charges. Therefore, conducting a proper throttle relearn procedure is vital for resolving these issues effectively.