Nov 10, 2023Driver assistanceLane Departure
Cruise control safety concern: car detects vehicle in front when there isn't and brakes sometimes hard abruptly due to misdetecting a vehicle ahead in a different lane as is it was in the car's same lane specially in curves or if the vehicle ahead but in a different lane is casting a shadow in front of car. Blind spot: blind spot detects a vehicle in the blind spot even when there's no vehicle. Noticed that car sometimes detects vehicles on an opposite direction road as if they're in the blind spot and it can set off the blind spot monitor.
NHTSA ODI 11554557
Nov 10, 2023Speed controlDriver assistance
While using the radar cruise control, the vehicle will aggressively apply braking pressure, without warning and risk losing control of the vehicle. The risk of being rear ended is frightening at highway speeds. This usually happens through turns, and the Mazda mistakes vehicles in opposite lanes as being in the same lane. This has occurred multiple times with different people.
NHTSA ODI 11554603
Nov 10, 2023Speed controlDriver assistance
When a large object like 18wheeler is in right lane and you are in left lane the car thinks it is in your way and the vehicle brakes hard. Very dangerous. Has happened numerous times.
NHTSA ODI 11554606
Nov 7, 2023Driver assistance
My car detects a vehicle in front and slows down in the following scenario - when on cruise control and passing a big truck from the other lane and the road is bent toward the right or left. It's so annoying and I might get rear-ended one day as the vehicle behind me doesn't expect that I slow down. Very dangerous safety issue!
NHTSA ODI 11554002
Oct 30, 2023Driver assistance
When using adaptive cruise control and passing a large trailer or truck in the left lane (the trailer or truck is in the right lane), the adaptive cruise control system incorrectly detects the trailer or truck to be in the same lane as the CX-90 and in some situations can slam on the brakes causing a potentially dangerous situation.
NHTSA ODI 11552683
Oct 28, 2023Driver assistance
The adaptive cruise control sometimes misreads the driving situation, especially on curves, and applies strong braking when there is no vehicle ahead in your lane. Especially when the vehicle in the adjacent lane is a truck. This could easily lead to being rear ended by a close following vehicle that is not expecting you to abruptly slow down. I had to turn it off on a trip on mountain interstates. I will address this at my first oil change at the dealer. I have had adaptive cruise on several other vehicles and never experienced this problem.
NHTSA ODI 11552392
Oct 26, 2023Driver assistance
Hi, When passing a truck which is on the right lane of the car, the car recognise the truck as a car in it's current plane and putting a sudden brakes. I almost got rear ended couple of times in the last one month. Please request Mazda to fix this Adaptive Cruise Control issue. Thanks, [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
NHTSA ODI 11552064
Oct 25, 2023Driver assistance
When ACC is on and speed is set, if the vehicle comes up onto a tractor trailer in the right lane, the CX-90 will think it is actually in front of my vehicle and abruptly slow my vehicle down, potentially causing myself to be rear ended.
NHTSA ODI 11551780
Oct 24, 2023Driver assistance
The adaptive cruise control (ACC) system in the CX90 is experiencing a high number of false positive incidents, which could lead to accidents. The system consistently thinks that a vehicle in the right or left lane has moved in front of the CX90, mainly when going around a curve. This is especially common when passing 18-wheelers, where the system will start alerting the driver with a noise and flashing alert to depress the brake pedal. The system then begins emergency braking procedures, even though the 18-wheeler or other vehicle has not actually moved lanes. This rapid deceleration at highway speeds is incredibly dangerous, especially for vehicles and large trucks following behind the CX90. In all of my incidents, the system has detected a vehicle in the other lane, but the vehicle has made no deviation towards the CX90's lane.
NHTSA ODI 11551719
May 12, 2023Electrical systemSpeed controlDriver assistance
During normal driving conditions going down a state highway, the vehicle lost speed with adaptive cruise control enabled. Noticing the vehicle was losing speed, I depressed the accelerator pedal. The accelerator pedal was unresponsive and unable to accelerate, I had to maneuver off the highway. Luckily, the car behind my vehicle was far enough behind me and my vehicle was going fast enough that I was able to coast to a safe stop on the side of the highway. A message popped up on the instrument cluster screen informing me to shift the transmission to Park in order to use the accelerator pedal. If this had happened on a road with little to no shoulder, the vehicle would have come to a sudden stop with nowhere to maneuver to. This would have created a dangerous situation for me, and any vehicle directly behind me. I then parked the vehicle on the side of the highway and with the vehicle still on and engine running, I again tried depressing the accelerator pedal. Again, there was no response from the pedal. I then turned the vehicle off, and restarted the vehicle. I was finally able to use the accelerator pedal and returned to the highway and my drive. The dealership was contacted a few hours after the incident, and the vehicle has yet to be inspected or problem reproduced. The vehicle is a 2024 MY and has been owned for only one month. Unfortunately, this incident is only one of five total electrical issues I have had with this vehicle. This was the most important issue to report because it involved my own safety.
NHTSA ODI 11521778