The contact owns a 2024 Mazda CX-90. The contact stated that while her husband was driving 70 MPH with the cruise control activated, her husband attempted to deactivate the cruise control before exiting the highway; however, the cruise control failed to deactivate. The brake pedal was depressed, but the brakes failed to stop the vehicle. The contact's husband exited the highway and drove into the median to avoid crashing with other vehicles. The driver turned the steering wheel, causing the vehicle to flip and then slam into the ground, fracturing both axles. The cruise control then deactivated. The contact stated that only the front driver's side air bags deployed. The driver suffered hip and arm bruises, while the contact suffered a lump on the head, and as bruises on the collarbone and arm. The driver received medical attention at the scene, but the contact declined. A Police report was filed. The vehicle was towed to a tow yard but had not yet been declared a total loss by the insurance company. The contact stated that prior to the failure, the message "Trailer Attached in Tow Mode" was displayed and the vehicle was taken to the dealer, who replaced the wiring harness due to corrosion. The manufacturer was not made aware of the failure. The failure mileage was approximately 15,000.
2024 Mazda CX-90: adaptive cruise control problems
23 of the 379 complaints about the 2024 Mazda CX-90 describe adaptive cruise control problems.
- owner complaints
- 23
- of this car's complaints
- 6%
- recalls
- 3
What owners say
The contact owns a 2024 Mazda CX-90. The contact stated that while driving 70 MPH, the dynamic cruise control feature failed to function as intended. The contact stated that the vehicle slowed down and then independently accelerated. The contact depressed the brake pedal to stop the vehicle. The message “Steering Assist Unavailable” was displayed. The vehicle was taken to the dealer; however, the failure was not duplicated. In addition, the contact stated that the vehicle was taken to several dealers, however the failure was not duplicated. The contact informed the dealers that the vehicle needed to be driven on the expressway for the failure to occur. The contact stated that the failure did not occur while driving the vehicle at slow speeds on the local streets. The contact stated that the failure was persistent while driving on the expressway. The vehicle was not diagnosed or repaired by an independent mechanic or dealer. The manufacturer was made aware of the failure, and a case was filed. The failure mileage was approximately 11,000.
Going down the road with cruise control I have been used to it dropping a little bit in curves but today and car behind me had to slam on there brakes because the cruise control in a small curve dropped me down immediately from 60 to 45 jerk and all. If the driver behind me had not been paying attention they would have slammed into me since we were both going 60 no other cars around just a small curve on a straight road
Car has 5000 miles on it. Numerous issues with car. Unsafe steering. Dealer not able to repair steering until Mazda provides parts for recall. Now on the highway with a medium depressed foot pedal the car speeds up on its own. Happened 2 times so far. Brakes had to be applied to slow car down. It was very brief because I immediately stepped on the brake, but it was definitely an uncommanded acceleration. Both times I did NOT have cruise control on. Definitely not safe.
When driving on the highway next to a large truck or semi and on a curve, the adaptive cruise control thinks that there’s a vehicle in front of you and slams on the brakes. This has happened a few times with my vehicle. Thankfully, there were no vehicles immediately behind me, or the results could’ve been tragic.
During cruise control engagement when passing a larger vehicle the system sometimes will execute aggressive braking potentially causing an accident with a vehicle following behind. Have to be ready to disengage cruise control during all situations with other vehicles in proximity. It will always perform the aggressive braking maneuver when passing a semi-truck on a curved highway.
In tighter corners the car coasts/brakes unnecessarily while cruise is on. Seems like a safety feature possibly or a malfunction as I haven't had that on any other cruise controls on other vehicles. Then after the corner it accelerates. I find very annoying. If this is considered a safety feature then ok but it is way to sensitive currently and needs an update.
When using the adaptive cruise control on a multi-lane highway the system will detect trucks/larger vehicles moving into your lane on a slight curve when they are not. The system will apply brakes to avoid a collision. The first time this happened there was no vehicle moving into my lane but there was an 18-wheeler behind me that wasn't expecting my vehicle to brake and they almost rear-ended me. This happened several other times before I understood the problem and turned the system off. I have reported this to my dealer and they stated the problem couldn't be replicated. This has been reported multiple times by other CX-90 drivers on this site and Mazda will get someone injured or killed if this is not fixed. If you drive a CX-90 do not use the cruise control until this is addressed by Mazda.
When using adaptive cruise control and you are driving on a curve, if there is a vehicle, guard rail or jersey barrier in the next lane or on the side of the road, the vehicle will brake hard thinking there’s something in front of it. It has even happened when there was a hillside next to the road. This is very dangerous on a high speed highway. It can slow down from 75 mph to 45 mph in a very short amount of time.
When going into curves on interstate, car thinks its gonna hit something and slams on the brakes when cruise control is engages. When passing a semi (semi slow lane, passing in passing lane), vehicle detects something in front of it and slams on the brakes. Does this on straight stretches. Slows down extremely fast to mabye 40 mph, then floors it once it thinks the "obstacle" has disappeared and speeds back up to the set speed as fast as it can. Sometimes does it when no othwr vehicles near it on straight stretchss of highway. This is gonna cause accidens. I don't trust the adaptive cruise control feature because it does this. This isn't weather or light related. Does it all the time.
When adaptive cruise control is engaged, and travelling in the left lane of a multilane highway, automatic braking frequently activates when there is a vehicle ahead in the right lane (especially, but not always, a truck) but no hazard in the lane directly ahead.
While driving on freeway with Adaptive cruise control set, vehicle automatically brakes when passing large vehicles, like semi trucks. ACC set at 75, I'm in left lane to pass truck going around curve and brakes come on and slow vehicle down to 60. I am clearly in the left lane to pass and truck in right lane. My safety and those behind are at a HUGE risk. This will cause an accident if not addressed. I am going to get rearended, it's just a matter of time. I have taken it to dealership and have been told this is normal. No it is not! No warnings other than car slamming on breaks for no reason. This has happened several times. I put down the date it first happened. I am available to bring it to dearship, again.
Service bulletins that may apply
- The CX-70 and CX-90 have new and revised features that are different from previous models and may be...
- Update software release for emergency lane keeping and/or smart brake support operation
- SSPD6 - special service program - vehicle control module (VCM) programming - 2024 CX-90 SSPD6 - 2024 CX-90
- SSPD1
- The CX-90 has new and revised features that are different from previous models and may be difficult to...
Related recalls
Forward collision avoidance: automatic emergency braking
- What is wrong
- Mazda North American Operations (Mazda) is recalling certain 2024 CX-90 vehicles. The brakes may activate suddenly due to the automatic braking system falsely detecting certain objects while driving.
- Risk
- Unexpected braking increases the risk of a crash.
- Remedy
- Dealers will reprogram the vehicle control module (VCM) with updated software, free of charge. Owner notification letters were mailed July 12, 2024. Owners may contact Mazda customer service at 1‑800‑222‑5500 Option 6. Mazda's number for this recall is 6724E.
Recall number 24V349000 · Recall details
Forward collision avoidance: sensing system: camera
- What is wrong
- Mazda North American Operations (Mazda) is recalling certain 2024 CX-90 and MAZDA3 vehicles. Due to a software error, the rearview, front, and/or side camera images may not appear on the display. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 111, "Rear Visibility."
- Risk
- A camera that does not display an image can reduce the driver's view, increasing the risk of a crash or injury.
- Remedy
- Dealers will update the view monitor control module software, free of charge. Owner notification letters were mailed December 20, 2023. Owners may contact Mazda customer service at 1‑800‑222‑5500 Option 6. Mazda's number for this recall is 6223J.
Recall number 23V718000 · Recall details
Back over prevention: warnings: external/pedestrian alert
- What is wrong
- Mazda North American Operations (Mazda) is recalling certain 2024 CX-90 vehicles. Software in the Approaching Vehicle Audible System (AVAS) Information Sound Box (ISB) amplifier may be missing, which can cause inaccurate, external pedestrian warning sounds. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 141, "Minimum Sound Requirements for Hybrid Electric Vehicles."
- Risk
- Inaccurate external warning sounds may confuse pedestrians about the direction of an approaching vehicle, increasing the risk of a crash or injury.
- Remedy
- Dealers will update the AVAS ISB amplifier software, free of charge. Owner notification letters were mailed September 18, 2023. Owners may contact Mazda customer service at 1‑800‑222‑5500 Option 6. Mazda's number for this recall is 6123H.
Recall number 23V553000 · Recall details
Questions about the 2024 Mazda CX-90 adaptive cruise
Is adaptive cruise control problems a common problem on the 2024 Mazda CX-90?
23 of 379 owner complaints about the 2024 Mazda CX-90 (6%) mention adaptive cruise control problems.
Is there a recall or service bulletin for this on the 2024 Mazda CX-90?
There are 3 recalls and 6 service bulletins for the same area of the car. Check them below with your VIN.
Other symptoms on the 2024 Mazda CX-90
Jerking 43Lane assist 16Grinding brakes 14Check engine light 11Loss of power 11Power steering loss 11Stalling 10Overheating 8Fuel pump 7Steering lock-up 7Won't shift 7Door locks 6Harsh shifting 5Headlights 5Won't start 5
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