2024 Toyota Grand Highlander Cruise Control Problems

Your vehicle suddenly accelerated on its own while you were pressing the brake pedal in your garage, causing it to lurch forward and hit a workbench. Even though you pressed the brake hard, the vehicle didn't stop immediately. The dealer and manufacturer's investigator couldn't find any mechanical problem with the vehicle and attributed the crash to driver error, but you're certain you were braking at the time.

Your car suddenly accelerated rapidly while you were trying to park, and the brakes didn't respond on your first attempt. You were able to avoid hitting anything, but no warning sensors activated. The experience felt like the vehicle was out of control. This may involve checking the throttle control system, brake responsiveness, and related electronic sensors.

Your accelerator pedal sometimes becomes unresponsive when you're stopped in traffic or at intersections — you press it but nothing happens for several seconds, then the vehicle suddenly surges forward with excessive acceleration. This happens intermittently throughout your day without any warning lights, making it dangerous when crossing intersections, merging, or turning because you can't predict how the car will respond. The problem appears to be related to throttle control or engine response management and may require diagnostic testing and potential software updates or throttle body service.

Your car hesitates when accelerating from a complete stop, sometimes refusing to accelerate for several seconds before suddenly responding. This has happened multiple times during turns and at intersections, creating a safety risk. The dealership performed a software update that temporarily helped but the problem has returned, and they are unable to replicate or fix it further. Resolving this will likely require additional diagnostic testing and a more permanent software solution or component repair from the manufacturer.

Your car may not respond when you press the gas pedal, failing to accelerate normally. This has happened multiple times, creating a safety risk—you were nearly hit by another vehicle while turning left because you couldn't accelerate beyond 5 mph. The fix likely involves diagnosing the throttle control system and may require software updates or replacement of throttle-related components.

Your car experienced a sudden loss of acceleration while turning out of a parking lot on a hot day (92°F). When you pressed the gas pedal, the vehicle wouldn't respond and coasted into the middle of the road—it felt like the transmission had shifted to neutral even though it was in Drive. The problem lasted about 5 seconds, then the engine suddenly revved and power returned. No warning lights appeared, and it has only happened once so far.

Your hybrid Grand Highlander's gas engine sometimes fails to start when you try to drive, leaving you stranded with only the electric motor running. This is a recurring issue that happens without any warning error codes appearing on your dashboard. The dealership has been made aware but hasn't provided effective support or diagnostics. The fix will likely require a diagnostic scan of the hybrid system's engine control computer and potentially repair or replacement of engine starting components.

Your car is experiencing a delay when accelerating from a complete stop — it takes about 4-5 seconds before the engine responds, which is particularly dangerous when merging into traffic. The issue persists even after your dealer performed a software update in September. Since there are no warning lights or error messages, the problem appears to be related to the vehicle's speed control system itself.

Your car hesitates or stalls when accelerating from a stop, especially on slight inclines, which creates a safety concern when pulling onto roads. The dealer has been unable to reproduce the problem or find any error codes, even though you experience it consistently when leaving their lot. The issue may require diagnostic scanning to identify transmission or engine control system problems that aren't currently triggering a code.

Your Grand Highlander Hybrid sometimes won't accelerate when you press the gas pedal after stopping at a stop sign or traffic light. This has happened 5 times in one month. The vehicle may need diagnostic testing of the throttle control system or accelerator sensor to identify why it's not responding to pedal input.

Your transmission is slow to engage when shifting from reverse to drive, taking 2-3 seconds instead of responding immediately. You're also experiencing hesitation when accelerating from a stop, which creates safety concerns in heavy traffic where quick response is critical. The dealer acknowledged the delay but called it normal, though a second dealer performed a software update that improved shifting but didn't resolve the engagement delay.