2025 Honda Accord Hybrid

When traveling on an Interstate Highway in the left lane of a 2-lane highway with the Adaptive Cruise Control turned on. Passing a tractor trailer going slower in the right lane, the car will apply the brakes unexpectedly. The dash will briefly show a "ghost" truck crossing into the left lane. The unexpected braking causes any vehicle behind the Accord to brake. Putting those vehicles and any behind them at risk. Smart Honda of Des Moines looked at the car on Sept. 22, 2025 reported no error codes and nothing could be done. If the Accord hugs the far left shoulder, no "ghost" breaking occurs. If the Adaptive Cruise Control is turn off and regular Cruise Control is turned on, no "ghost" braking occurs.

The car was in cruise control going 73mph on the freeway. I was passing a semi on the left hand side. When I was parallel to the semi, the car brakes hard and a big "BRAKE" light came on the cluster. There were no cars in front of me and luckily no one behind me. If there was a car behind me there would have been a collision. It was a clear day and again the road was clear. It took me from 70 to about 40 mph until I hit the accelerator to get back to speed. The CMBS is faulty and I will take it in to a dealer asap.

When car has been stopped, in traffic or parking lot, the parking/emergency brake has engaged automatically (NOT engaged manually or intentionally by driver) and will not disengage automatically when accelerator is pressed to go forward. It is difficult to disengage the brake when this occurs. This has happened on 3 occasions. The safety risk for crash includes being hit from behind if brake engages unintentionally in traffic or on highway, or potentially sudden unintentional stopping while driving at moderate or high speeds. The issue was reported to dealer after twice occurring and full DTC check performed. Dealer says all diagnostics normal and could not identify any problems with parking/emergency brake or Collision Mitigation Braking System. The issue has occurred one time since the dealer inspection. The red light on the emergency break switch (console) comes on when this occurs, but no prior warning lamps or messages.