Adaptive Cruise Control problems of the 2021 Honda Accord

Four problems related to adaptive cruise control have been reported for the 2021 Honda Accord. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2021 Honda Accord based on all problems reported for the 2021 Accord.

1 Adaptive Cruise Control problem

Failure Date: 03/02/2023

Numerous times, at least 20 up to now, while cruising at high speed on the highway using adaptive cruise control, the car has abruptly slammed on the brakes or slowed down several mph, with no traffic in front of me. There has been traffic in adjacent lanes but never in front of me.

2 Adaptive Cruise Control problem

Failure Date: 02/14/2023

I was driving my 21 Honda Accord 1. 5t on the highway and all of a sudden vehicle lost the power and Honda sensing / emission warning lights came on. It almost cause a major accident and I was lucky enough to exit the freeway without incident. I drove to the Honda dealer and they found out one of the wire harnesses was chewed by a rodent which causes the whole issue. I did some research and found out that Honda was using less expensive soybean base wire harnesses (instead of petroleum base wire harnesses) to save the planet earth. This soybean wires are easy target for rodents. This less expensive soybean wire harness cost about $3000-3500 to replace and it's not fair to the consumer. Honda must re-call this soybean wire harness before causing some major accident, especially on the freeway ( imaging your car losing power while driving 65-70 mph).

3 Adaptive Cruise Control problem

Failure Date: 06/28/2022

Car moving slowly and suddenly races and speeds up. Hard to stop it. Has happened twice, 8 to 10 months apart. . First time was on a small driveway. Was able to stop car , with no damages. 2nd occurrence I was pulling into a parking space. Foot not on gas or brake and again the car accelerated. This time the car hit a handicapped parking sign and pushed it over. The sign stopped the car with assistance from me. There was a small drop in front of the car and a tree 10-15 feet in front of the hill. The passenger in my car would have been in severe trouble had I not gotten the car stopped. My husband thought I may have somehow activated the cruise control. But I was going less than 20 miles per hour each time. This could be a deadly problem if a child or someone crossed in front of me.

4 Adaptive Cruise Control problem

Failure Date: 02/15/2022

Phantom braking when using adaptive cruise control. The vehicle brakes unexpectedly when adaptive cruise control is enabled. Typically happens when there is no leading vehicle in my lane, but there are vehicles ahead of me in other lanes. Happens consistently, almost every time the adaptive cruise is enabled. The system also applies brakes in situations when cruise control is not enabled, and there is no leading vehicle in front of me. Issue can surprise drivers behind me and lead to a collison where I am hit from behind.


Other Forward Collision Avoidance related problems of the 2021 Honda Accord

Automatic Emergency Braking problems
18
Adaptive Cruise Control problems
4
Warnings problems
2


Safety Ratings of Accord Cars
Fuel Economy of Accord Vehicles
Accord Service Bulletins
Accord Safety Recalls
Accord Defect Investigations