The problem
Honda (American Honda Motor Co.) is recalling certain model year 2014-2015 Acura MDX 2WD and AWD, RLX and 2014 Acura RLX Hybrid vehicles. In certain driving conditions, the Collision Mitigation Braking System (CMBS) may incorrectly interpret certain roadside objects such as metal fences or metal guardrails as obstacles and unexpectedly apply the brakes.
The risk
If the CMBS unexpectedly applies emergency braking force while driving, there is an increased risk of a crash.
The fix
Honda will notify owners, and dealers will update the CMBS software, free of charge. The recall began on July 6, 2015. Owners may contact Acura customer service at 1-800-382-2238. Honda's numbers for this recall is JQ4, JQ5 and JQ6.
Recall details
| NHTSA campaign | 15V-301 (15V301000) |
|---|---|
| Manufacturer number | JQ4, JQ5, JQ6 |
| Manufacturer | Honda (American Honda Motor Co.) |
| Component | Forward collision avoidance › Crash imminent braking |
| Report date | May 20, 2015 |
| Owners notified | July 6, 2015 |
| Vehicles affected | 19,502 |
| Initiated by | Manufacturer |
Vehicles covered
Owner complaints about the driver assistance
Frequently asked questions
Is the recall 15V-301 repair free?
Yes. Acura dealers will fix the problem at no cost: Honda will notify owners, and dealers will update the CMBS software, free of charge. The recall began on July 6, 2015. Owners may contact Acura customer service at 1-800-382-2238. Honda's numbers for this recall is JQ4, JQ5 and JQ6.
How do I know if my car is included?
Not every vehicle of the listed model years is affected — the recall covers 19,502 vehicles built in a certain window. Check your 17-character VIN with our VIN recall check or at nhtsa.gov/recalls.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.