Diagsheet

2018 Honda Accord · symptom sheet

Adaptive cruise or lane keeping misbehaves

  • 103owner reports
  • 20,613median miles
  • 2involved a crash

Newest report Aug 21, 2026 · checked Sep 9, 2026

445 of the 1,867 complaints on this car are about collision avoidance. 103 of those describe driver assist.

Tick what matches of 103 reports

29
25
17
83
6

What got replaced

Owners who name the part that was replaced mention the software (7 reports), the radar (6 reports) and the camera (5 reports).

Recalls and investigations

No recall on collision avoidance covers the 2018 model year as of Sep 9, 2026.

NHTSA investigations into collision avoidance on the Accord

EA24-002opened Apr 15, 2024
Collision avoidance · model years 2018 to 2022

Inadvertent automatic emergency braking. Open.

NHTSA summary
On February 21, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation (PE22003) to assess reports of inadvertent activation of the Collision Mitigation Braking System (CMBS), an automatic emergency braking (AEB) system, in model year 2017-2019 Honda CR-V and 2018-2019 Honda Accord vehicles. The reports allege that activation of the AEB system occurs while driving with no apparent obstruction in the vehicle's forward path, resulting in sudden vehicle deceleration. Honda indicated that they were aware of a total of X,XXX reports that may relate to the alleged defect. Honda provided analysis of the alleged defect and alleges that some customers possibly had an inadequate understanding of the CMBS and its limitations. However, many consumer complaints allege that Honda dealerships were unable to reproduce the condition or state that they were informed that this is considered normal CMBS operation. To date, ODI has received a total of 1,294 consumer complaints of inadvertent activation of CMBS in 2017-2022 Honda CR-V and 2018-2022 Honda Accord vehicles. A total of 31 complaints alleged a crash and 50 alleged an injury. The Total column in the Failure Report Summary removes duplicate reports and shows the total number of reports with unique VINs from all Manufacturer, ODI, and EWR data sources. In some cases, there were multiple reports associated with a particular vehicle in which recurring failures were alleged. In total, there were X,XXX reports
PE22-003opened Feb 21, 2022
Collision avoidance · model years 2018 to 2019

Inadvertent automatic emergency braking. Closed apr 18, 2024.

NHTSA summary
On February 21, 2022, the Office of Defects Investigation (ODI) opened Preliminary Evaluation (PE22003) to assess reports of inadvertent activation of the Collision Mitigation Braking System (CMBS), an automatic emergency braking (AEB) system, in model year 2017-2019 Honda CR-V and 2018-2019 Honda Accord vehicles. The reports allege that activation of the AEB system occurs while driving with no apparent obstruction in the vehicle's forward path, resulting in sudden vehicle deceleration. Honda indicated that they were aware of a total of X,XXX reports that may relate to the alleged defect. Honda provided analysis of the alleged defect and alleges that some customers possibly had an inadequate understanding of the CMBS and its limitations. However, many consumer complaints allege that Honda dealerships were unable to reproduce the condition or state that they were informed that this is considered normal CMBS operation. To date, ODI has received a total of 1,081 consumer complaints of inadvertent activation of CMBS in the subject vehicles. A total of 24 complaints alleged a crash and 42 alleged an injury. The Total column in the Failure Report Summary removes duplicate reports and shows the total number of reports with unique VINs from all Manufacturer, ODI, and EWR data sources. In some cases, there were multiple reports associated with a particular vehicle in which recurring failures were alleged. In total, there were X,XXX reports, 84 injury incidents and 40 crash
PE93-083opened Sep 27, 1993
Speed control · model years 1990

Stalling. Closed jan 31, 1994.

NHTSA summary
There is no summary currently available
EA89-005opened Nov 16, 1988
Speed control · model years 1986 to 1987

Fuel system venting. Closed nov 30, 1989.

NHTSA summary
===
PE88-062opened Jun 21, 1988
Speed control · model years 1986 to 1987

Fuel system venting. Closed nov 16, 1988.

NHTSA summary
SUMMARY: THE FOUR OWNER COMPLAINTS INVOLVE FIVE VEHICLES, THREE ACCORDS AND TWO LEGENDS. A SEARCH OF ODI RECORDS PERTAINING TO HONDA SAFETY RECALLS AND DEALER SERVICE BULLETINS REVEALED NO INFORMATION RELATED TO THIS SUBJECT.===
DP88-008opened Jan 13, 1988
Speed control · model years 1986

Accord sudden accel-see dp87-026. Closed mar 30, 1988.

NHTSA summary
ACCORD SUDDEN ACCEL-SEE DP87-026
DP87-026opened Jul 13, 1987
Speed control · model years 1984

Sudden acceleration. Closed jul 21, 1987.

NHTSA summary
SUDDEN ACCELERATION
PE86-066opened Jul 28, 1986
Speed control · model years 1984 to 1986

Sudden acceleration. Closed nov 3, 1986.

NHTSA summary
SUMMARY OF INFORMATION FROM MANUFACTURER:INFORMATION FROM HONDA RELEVANTTO THIS PE WAS PROVIDED BY LETTER DATED 8 SEPTEMBER AND A PRESENTATION TONHTSA ON 2 OCTOBER.HONDA HAS ISSUED NO TECHNICAL SERVICE BULLETINS OROTHER NOTIFICATIONS TO DEALERS RELATING TO FUEL FLOW AND DELIVERY, THROTTLECONTROL, OR ENGINE MALFUNCTIONS THAT MAY RESULT IN UNINTENDED SUDDENACCELERATION.THE AFFECTED VEHICLES ARE EQUIPPED WITH A CARBURETOR DESIGNWHICH, ACCORDING TO HONDA'S EVALUATION, WILL NOT PERMIT ENGINE RPM TOEXCEED A FAST IDLE CONDITION OF 2000 RPM WITHOUT DRIVER ACTUATION OF THETHROTTLE. TEST DATA WERE PROVIDED TO SHOW THAT AN ENGINE SPEED OF 2000 RPMWITH THE TRANSMISSION IN THE PARK POSITION WOULD, WHEN SHIFTED INTODRIVE, YIELD A VEHICLE SPEED OF 8 MPH AFTER APPROXIMATELY 10 SECONDS.OTHER TEST DATA WERE PROVIDED TO SUPPORT HONDA'S POSITION THAT FAILEDENGINE MOUNTS WOULD NOT CONTRIBUTE TO SUDDEN VEHICLE ACCELERATION ASALLEGED IN THIS PE.ANALYSIS:THE FOLLOWING ARE CONSIDERED SIGNIFICANT OBSERVATIONS AND/ORANALYTICAL ASSESSMENTS OF THE FACTS IN THIS PE FILE: OTHE ALLEGED INCIDENTS ARE SIMILAR TO THOSE FROM OTHER PE/EA FILESIN THAT THEY TEND TO EMPHASIZE OCCURRENCE OF THE PHENOMENON WHENTHE TRANSMISSION IS SHIFTED FROM PARK INTO ANOTHER GEAR. OA HIGH PERCENTAGE OF THE REPORTED OCCURRENCES ALSO INVOLVEACCIDENTS,BUT THE RELATIVELY LOW PERCENTAGE OF INJURY ACCIDENTSSUGGESTS THAT MOST ARE LOW SPEED COLLISIONS. OHONDA HAS NOT IDENTIFIED, AND ODI'S ANALYSES HAVE NOT DISCOVERED,A TREND OF MECHANICAL

When it happens

The middle half of failures fell between 6,853 and 45,000 miles, from the 55 reports that gave a mileage.

1018
2119
320
1421
2022
723
1024
1025
826

What owners wrote

“Well to start I had to replace my head gasket already last winter at 59K miles and for awhile now I had warning lights on my dash for CMBS system failure and cruise control/steering wheel controls don’t work besides the ones for music. No lane assist, none of those safety features work at all and haven’t for awhile”

Filed Jul 13, 2025 · 59,000 miles

“On July 31st, 2022 at approximately 1135AM Central Time on I-90 westbound near Dekorra, WI when passing a tow truck in the middle lane as I was in the right most lane the Automatic Emergency Brake system sounded visual and audio alerts urging me to a *Brake Now*. Adaptive Cruise Control was engaged at approximately 73mph.”

Filed Aug 11, 2022

“Twice while driving on 110S in morning rush hour traffic, I get a lane departure warning and the car starts braking. I am not sure if the system is designed to do that but it was a bit scary.”

Filed Aug 6, 2022

“I got a Collision Mitigation Braking System warning while driving at a high speed > 60 mph on the Interstate with adaptive cruise control turned on. The system suddenly cuts off speed and lost cruise control. I have to stop on road side, turn off the car and restart it for the warning go away.”

Filed Jul 19, 2022

Should you keep driving it?

This page can't tell you that. 2 of 103 reports involved a crash. Owners who file are the ones who had a bad experience, and nobody checks their reports. If the problem affects steering, braking, power or a fire risk, treat it as a safety fault and have it inspected before a long or high-speed drive.

File your own report with NHTSA. Complaint counts are how a problem gets an investigation.

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