Six problems related to vehicle speed control have been reported for the 2018 Toyota Highlander. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2018 Toyota Highlander based on all problems reported for the 2018 Highlander.
1. What component or system failed or malfunctioned, and is it available for inspection upon request? the issue involves the dynamic radar cruise control system (vehicle-to-vehicle distance control mode) in my 2018 Toyota Highlander. This system automatically cancels when the vehicle’s speed drops to approximately 25 mph (40 km/h) or below. The system disengages without driver input during normal driving conditions such as heavy traffic or congestion. The component remains functional but poses a safety concern due to its operational design. The vehicle and system are available for inspection upon request. 2. How was your safety or the safety of others put at risk? this malfunction creates a significant safety risk when driving in stop-and-go or congested traffic. The sudden loss of adaptive speed control forces the driver to quickly resume manual braking and acceleration, which can cause delayed reactions and potential rear-end collisions. The unexpected disengagement may also confuse drivers, especially those relying on the system to maintain safe following distances. This behavior increases cognitive load and the chance of driver error, particularly for elderly or less experienced drivers. 3. Has the problem been reproduced or confirmed by a dealer or independent service center? yes. The issue has been observed and replicated multiple times during normal driving conditions, such as during city traffic or highway slowdowns. It is also acknowledged in the vehicle owner’s manual, which specifies that the system automatically cancels below approximately 25 mph. However, this design flaw has not been formally addressed or corrected by Toyota dealerships or service centers as a safety concern. 4. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives or others? the vehicle has not been inspected specifically for this concern by Toyota or other third parties. However, the condition is consistent across the same model and year,.
2018 Toyota Highlander platinum started with a whine noise, vibration, and went into limp mode. The transmission has been noted to needing to be replaced. I am currently at 75,453 miles and started to hear the whine at around 65,000 miles. This car is not safe to drive.
My relatives remembered the 2002-2011 recall of 80,000 Toyotas, 90 deaths due to unintended acceleration and said that seems exactly what happened to me last month. Near fatal collision due to sticky pedal 2018 Toyota Highlander 10/10 slowly backed out of parking space in large, empty commercial lot: sunny day, 3pm ? tapped pedal into drive ? car sped off at 50+mph with my foot off pedal ? sped around lot for approximately 3minutes ? holding brake down and down-shifting did nothing except cause sheer terror with my uncontrollable vehicle ? hit pole and vehicle came to a stop after near-complete destruction of passenger-side bumper ? no injury except sheer mental terror ? no witnesses do not blame the victim. Dealer says all-weather floormat could never have been or be involved.
The contact owns a 2018 Toyota Highlander. The contact stated while driving 70 mph the check engine light illuminated. , informing him that the all-wheel-drive system and stability were disabled. The vehicle was taken to the dealer where they diagnosed the failure of the sub assemble and the water temperature sensor needed replacement. The contact stated that he was informed the onboard computer disable the system due to the weather. The dealer informed the contact that the parts were on national backorder. The dealer did a temporary repair by placing plastic on the grill to keep cold air out; however, the failure has occurred several times. The manufacturer was notified of the failure and advised the contact that the parts were not covered under warranty. The approximate failure mileage was 48,000.
Apon acceslaration , car hesitate for a few second, rpm goes to 5000 until vehicle slowly start to move. Feels likew ther is no proper synch between enging and transmission. Dangerous when passing or avoiding a vehicle ahead of you. The same issue while using the cruse control, it jumps from a few rpms to 5k + that always I have to brake to avid ramming a car ahead of me. Brakes get sof that I have to pump it a few times. Mileage is 1780 miles.
The contact owns a 2018 Toyota Highlander. While driving various speeds and depressing the accelerator pedal, the vehicle would not immediately respond. Approximately two seconds after depressing the accelerator pedal, the engine revved and the vehicle abruptly accelerated forward. The vehicle was taken to conicelli Toyota (550 w. Ridge pike, conshohocken, PA) on several occasions, but no failure was found. The contact stated that the failure continued. The manufacturer was notified. The failure mileage was 3,450.
| Vehicle Speed Control problems | |
| Cruise Control problems | |
| Throttle Throttle Position Sensor (tps) problems |