2018 Honda Accord: adaptive cruise control problems

Filed Aug 21, 2026 · Driver assistance · NC

These 9 things are on my dashboard- I’ve called Honda corporate to see if they could do something about this because I’m not the only one with this problem. My car is now barely drivable and the dash have not went away Emission system Road departure mitigation system Brake system problem Collision mitigation braking system Hill start assist problem Adaptive cruise control system Vehicle stability assist system problem Electric power steering system

Filed Aug 16, 2026 · Driver assistance, Electrical · CA

While driving, the vehicle suddenly jerks or “jumps,” followed immediately by a noticeable loss of power. Shortly after this occurs, the multi-information display shows a series of warnings that include: Collision Mitigation Braking System Problem – See Your Dealer Adaptive Cruise Control System Problem – See Your Dealer Road Departure Mitigation System Problem – See Your Dealer Auto High-Beam Problem – Manual Controls Available – See Your Dealer Brake System warning light A “Systems Initializing… Continue Driving” message also appears. I have photographic documentation of these dashboard messages. This sequence creates a significant safety concern. The sudden jerk and power loss can occur while the vehicle is in motion, and the subsequent disabling of the Honda Sensing systems (Collision Mitigation Braking, Adaptive Cruise Control, and Road Departure Mitigation) leaves the vehicle without those critical driver-assistance features. Because this involves sudden power loss and the disabling of safety systems, I consider the issue urgent and ask that it be prioritized.

Filed Jul 23, 2026 · Engine, Fuel system · VA

My Accord reported multiple warnings at engine start up (check engine light, warnings about cruise control, etc.), and the engine ran rougher than normal. I immediately drove to a Honda dealer for service. The Honda dealer, Checkered Flag Honda of Norfolk, Virginia, diagnosed a blown head gasket in cylinder 2, which allowed all coolant to drain into the engine. They also indicated that fuel injectors and spark plugs were compromised and required replacement. The vehicle has approximately 75,000 miles, has received regular maintenance, and was operated in normal driving conditions.

Filed Jul 21, 2026 · Brakes, Electrical · GA

What component or system failed or malfunctioned, and is it available for inspection upon request? I own a 2018 Honda Accord with approximately 132,000 miles. Shortly after my vehicle was serviced for the fuel pump recall, multiple warning lights and system failure messages appeared simultaneously. The affected systems include Road Departure Mitigation, Emission System, Adaptive Cruise Control, Auto High Beam, Collision Mitigation Braking System, Electric Power Steering, Vehicle Stability Assist, Tire Pressure Monitoring System, Hill Start Assist, and the Air Bag System. The vehicle is available for inspection upon request. How was your safety or the safety of others put at risk? The failure of multiple safety and driver-assistance systems has created a significant safety risk. My vehicle is currently operating in limp mode, resulting in reduced performance and making it difficult to drive safely in traffic. The loss or malfunction of systems such as collision mitigation braking, power steering, vehicle stability assist, adaptive cruise control, and air bag monitoring increases the risk of an accident and could jeopardize the safety of both vehicle occupants and other motorists. Has the problem been reproduced or confirmed by a dealer or independent service center? Yes. I took the vehicle to a Honda dealership for diagnostic testing after the warning lights appeared. The dealer confirmed that multiple systems were reporting faults. I was advised that numerous components would need to be replaced at a substantial cost. Prior to the fuel pump recall service, I had not experienced any of these issues and the vehicle operated normally. Has the vehicle or component been inspected by the manufacturer, police, insurance representatives, or others? The vehicle has been inspected by a Honda dealership for diagnostic purposes. To my knowledge, it has not been inspected by Honda corporate, law enforcement, or insurance representatives. Were there any warning lamps, mes

Filed Jul 3, 2026 · TN

We started driving and after driving the tire pressure light went on. We stopped checked all tires pressure everything was fine. Then about 2 or 3 hours later every light on my dash board lit up. Check Engine Light: Brake System Light: Traction Control Light: Lane Keeping Assist (LKAS) Light: Adaptive Cruise Control Light: Power Steering Light. There was no weird Sounds and no smoke or smell. Got off at the first exit I could and stopped at a gas station to check my fluids engine and battery just make sure nothing was wrong. Had to get a hotel room next morning when it was time to leave the lights were still on and I drove to auto zone up the street and had them see what codes were coming up. They told me it was the turbo and water gate. I then go my car towed

Filed Jun 25, 2026 · Driver assistance, Electrical · OH

There are 13 alerts showing on the instrument panel for various systems not functioning, along with accompanying yellow dash lights such as tire pressure, ABS, brake system, traction control, ACC, and LKAS. Systems not available include, ABS system, Adaptive Cruise Control, Road Departure Mitigation, Auto High-Beam, TPMS, Electric Power Steering, plus several others. These alerts first started January 2026 and occasionally would disappear; however, over the past few months the warnings have become constant. The vehicle has approx. 120,000 miles. Due to TPMS not functioning, I am not given a warning when a tire has gone flat/blown while driving as the tire pressure light is always on the dash. The only warning I am provided is the sound/smell of the rim dragging along the road to notify me the tire is flat. This poses a risk to myself and others by creating an emergent situation requiring me to pull over rapidly. Another incident occurred when ACC was enabled (at a time when the alerts had been appearing on and off). Cruise control set at 70 mph when suddenly the above mentioned alerts reappeared and ACC system became unavailable, leading to unexpected deceleration on the highway. This poses a risk to myself and others as it creates unpredictable driving patterns, unbeknownst to the driver. Initially I replaced the battery with no resolution of the issue. I later discovered maintenance code displayed by the vehicle was C003A-62 for Right Rear Wheel Speed Sensor Circuit Failure (circuit short to ground or open). The mechanic recommended replacing the right wheel hub assembly as this was suspected to be the cause of failed circuit. When that repair lasted no more than 10 mins before the warnings reappeared, the right rear wheel speed sensor itself was then replaced. Similarly, this did not fix the issue. I have not sought additional service due to repair costs beginning to add up with no resolution. Based on the history of reports, this issue does not seem uncommon.

Filed Jun 1, 2026 · Driver assistance · 99,735 miles · TN

The contact owns a 2018 Honda Accord. The contact stated that while driving at 45 MPH with the cruise control engaged, the brakes suddenly applied without application. The brake message was displayed. The local dealer was not contacted. The vehicle was not diagnosed or repaired. The manufacturer was not notified about the failure. The approximate failure mileage was 99,735.

Filed May 6, 2026 · Engine, Fuel system · MA

While driving at highway speeds, the vehicle experienced a sudden jerking and a catastrophic loss of motive power (Limp Mode). Simultaneously, multiple safety systems failed, including the Collision Mitigation Braking System (CMBS), Adaptive Cruise Control, and Road Departure Mitigation. The vehicle became a road hazard in active traffic. A certified Honda dealership technician inspected the vehicle and confirmed a premature head gasket failure with coolant intrusion into cylinders 2 and 3. The engine is non-drivable and the vehicle is at 84,000 miles. Despite the documented nature of this design defect and its current litigation, American Honda Motor Co. has denied any assistance. The vehicle also has an open safety recall (24-009) for a fuel pump failure which presents identical safety symptoms.

Filed Apr 29, 2026 · Driver assistance, Electrical · AR

The day I purchased the vehicle from the dealer, every warning light began cycling on including the automatic emergency braking failure, engine system failure and others. I immediately took the car back to the dealer and they supposedly repaired it. When the car was returned to me, I drove it for less than a week and the same thing happened again. When the light came on, the car’s auto braking and cruise control stopped working. I took it back to the dealer and they said it was the head gaskets, which they fixed. When I got the car back again, I drove it for 2 days and it did the same thing again, this time all of the warning codes came on. This time, I had a total engine failure because the timing chain broke. The dealer took almost two months to replace the engine and it cost us almost $6,000. I got the car back last Saturday. Today, driving home from work, the automatic brake system failure warning came on again and the car won’t automatically brake and cruise control wouldn’t work. This is exactly what happened last time. I am afraid to drive this car because I don’t know if the brakes will fail and the system currently isn’t working. We are taking it back to the dealer which will likely cost us more money. We are stuck with this car and cannot get rid of it because we owe more money on it then it is worth because of replacing the engine.

Filed Apr 17, 2026 · Fuel system · LA

Subject: Formal Complaint – Unresolved Safety Issues Following Recall Service (2018 Honda Accord) I am submitting a formal complaint regarding ongoing and unresolved safety issues with my 2018 Honda Accord, which began during the time frame of a fuel pump recall and have not been properly resolved despite multiple attempts with Honda service departments. Approximately two years ago, my vehicle was subject to a fuel pump recall. During the extended wait period for the replacement part, my vehicle began displaying multiple warning messages and experiencing performance issues. These issues included reduced acceleration and erratic driving behavior. Once the recall repair was completed, I was informed that an additional repair—a battery sensor replacement—was necessary, which cost approximately $800 out of pocket. Despite completing both the recall repair and the recommended sensor replacement, my vehicle has not operated properly since that time. Currently, the vehicle intermittently displays multiple system warnings, including but not limited to: - Emission system problem - Brake system and brake hold system problems - Electric power steering problem (reduced steering assist) - Vehicle stability and traction control warnings - Adaptive cruise control system problem - Collision mitigation braking system problem - Road departure mitigation system problem In addition, the vehicle frequently enters a reduced power or “limp mode,” making it difficult to accelerate safely, particularly at lower speeds. Restarting the vehicle temporarily resolves the issue, but the warnings and performance problems return shortly after. I have brought this vehicle to Honda service departments on multiple occasions. The vehicle was held for extended periods without resolution, and I ultimately had to retrieve it without a clear diagnosis or repair plan. I also contacted American Honda for assistance and did not receive meaningful support.

Filed Apr 13, 2026 · KY

I am experiencing an ongoing issue with my 2018 Honda Accord LX 1.5L where multiple warning lights on the dashboard illuminate simultaneously without warning, often described as the dash lighting up “like a Christmas tree.” These lights include (but are not limited to) collision mitigation braking system, road departure mitigation, adaptive cruise control, power steering, and other safety-related systems. The issue appears to occur intermittently and without a clear cause. When this happens, several driver-assist and safety features become disabled, which raises serious safety concerns while operating the vehicle. After researching this problem, I have found numerous reports from other Honda Accord owners experiencing the exact same issue across various online forums and communities. Many of these individuals have also been advised to file complaints with the federal safety agency due to the widespread nature of the problem. This appears to be a potential systemic or electrical issue that affects multiple critical safety systems at once. I believe this defect could pose a significant safety risk and should be investigated further.

Filed Apr 12, 2026 · Acceleration, Driver assistance · OH

When Tpms light comes on, all safety features including cruise control become disabled. Lane assist and collision safety features become disabled. On top of that, I have had Honda look at my rear end after they replaced a rear upper control arm after being in a ditch and at 246,000 current miles, I have replaced my tires 16 times due to the rear tires ripping the tread off between 10-15k. If there was nothing else wrong, why have I spent between $10,000-$15,000 miles on tires? I have had numerous alignments at Honda and elsewhere. Marion Honda claims it’s normal! I was told I can put adjustable control arms on. I have met other Honda accord sport 1.5t owners with 50k miles on one set of tires, yet I can’t get more than 15k on the rear tires. Clearly something is bent or incorrect currently I am re replacing the upper control arm.. They say the alignment rack does not flag anything. I have bought between Goodyear, Michelin, and Pirelli tires they also replaced a turbo, only for a few months later to have a pressure problem that Findlay Honda found I was missing an oring in the turbo or intercooler. How? Orings do not call out. Fast forward 18 months and another bad turbo on this lemon!