JQ5 & JQ6 – Safety Recall: RLX and RLX Sport Hybrid CMBS Error – 2014-2015 Acura RLX & 2014 Acura RLX Hybrid

NHTSA Campaign Number: 15V301
Manufacturer Honda (American Honda Motor Co.)
Components FORWARD COLLISION AVOIDANCE
Potential Number of Units Affected 19,502

 

Activation of Collision Mitigation Braking System

If the CMBS unexpectedly applies emergency braking force while driving, there is an increased risk of a crash.

 

Summary

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.

 

Remedy

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.

 

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

 

Check if your Acura has a Recall


B15-030
June 13, 2015
01978 Version 3

 

Safety Recall: RLX and RLX Sport Hybrid CMBS Error

 

Supersedes 15-030, Safety Recall: RLX CMBS Error, dated June 5, 2015, to revise the information highlighted in yellow

Replaces 15-031, Safety Recall: RLX Sport Hybrid CMBS Error

 

AFFECTED VEHICLES

Year Model Trim VIN range
2014–15 RLX Advance Check the iN VIN status for eligibility
2014 RLX Sport Hybrid Advance Check the iN VIN status for eligibility

REVISION SUMMARY

Under WARRANTY CLAIM INFORMATION, the flat rate times were changed.

 

BACKGROUND

Under certain specific driving conditions, the collision mitigation braking system (CMBS) could lock on an incorrect target. If this occurs, the CMBS may apply the brakes in an attempt to stop the vehicle. If the vehicle suddenly slows or comes to a stop, it could increase the risk of a crash.

If you have a client who is concerned about the CMBS activating before the software update can be done, you can direct them to turn it off by pressing the CMBS OFF button for about a second. The CMBS indicator in the instrument panel will come on and stay on until the CMBS OFF button is pressed again to turn the system on.

 

CORRECTIVE ACTION

Update the ACC/CMBS software.

 

WARRANTY CLAIM INFORMATION

Operation Number Description Flat Rate Time Defect Code Symptom Code Template ID Failed Part Number
4815D3 RLX – Update the ACC/CMBS software. Includes brake light

(ACC) relay test.

0.4 hr 5UV00 JQ500 15-030N 36700-TY2-A04
4815D3 RLX Sport Hybrid – Update the ACC/CMBS software. Includes brake light (ACC) relay test. 0.4 hr 5UV00 JQ600 15-030P 36700-TY3-A03

Skill Level: Repair Technician

 

 

SOFTWARE INFORMATION

NOTE: Unnecessary or incorrect repairs resulting from a failure to update the HDS or MVCI are not covered under warranty.

MVCI Control Module (CM) Update:

Application Version 3.01.40 or later
Database update 25-MAY-2015 or later

NOTE: The database update can be updated while the application version remains the same. Make sure you check the database update before doing the ACC/CMBS update.

HDS Software Version:
3.016.023 or later

Before beginning the repair, make sure that both the HDS and MVCI are updated as listed above.

Do only the update listed in this service bulletin.

Check that the MVCI indicates the applicable program ID listed below (or a later program ID) as the Available Update when the update begins.

If the MVCI displays This vehicle does not need an update at this time during the update, the software for this service bulletin is already installed.

For more information about updating the HDS, the MVCI, and vehicle systems, refer to Service Bulletin 01-026, Updating Control Units/Modules.

Year/Model Program ID (or later) Program P/N (or later) System to Update
2014–15 RLX 36707-TY2-3050 Y23050 ACC/CMBS
2014 RLX Sport Hybrid 36707-TY3-A060 Y3A060 ACC/CMBS

 

REPAIR PROCEDURE

  1. Update the ACC/CMBS software. Refer to Service Bulletin 01-026, Updating Control Units/Modules.

NOTE: Make sure the MVCI database update is 25-MAY-2015 or later.

  1. After the MVCI updates the ACC/CMBS, connect the HDS to the vehicle.
  2. Press the ENGINE START/STOP button to select the OFF power mode.
  3. Press the ENGINE START/STOP button to select the ON power mode.
  4. Start the engine.
  5. Using the HDS, go to DRIVING SUPPORT and select ACC, then select FUNCTION TEST.
  6. Do the Brake Light (ACC Relay)

NOTE: During the test, the number 108 appears on the MID and the brake lights are on.

  1. Using the HDS, check for DTC B2A00-52.
    • If DTC B2A00-52 is stored, do the applicable troubleshooting. Refer to the electronic service manual.
    • If DTC B2A00-52 is not stored, the update is complete.

https://static.nhtsa.gov/odi/rcl/2015/RCRIT-15V301-4385.pdf

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i-HDS Diagnostic Software and J2534 Reprogramming Software

 

Honda J2534 Pass-Thru User Guide

Honda J2534 Pass-Thru Software Download

Latest ECU Software

 

Vehicle Communication Interfaces (VCI)

The i-HDS software supports the use of a generic pass-thru VCI that is compliant with SAE J2534-1 and J2534-2. However, Honda recommends the Denso DST-i or the Bosch MVCI for use on Honda and Acura vehicles, as Honda has worked closely with these manufacturers to ensure their hardware and our software interact safely and within the J2534-1 and -2 specifications, for both diagnostics and reprogramming. If you choose to use a generic VCI, please carefully consider the customer and technical support options you will receive from your chosen device supplier. Honda does not provide technical or customer support for generic VCI devices.    

The VCI Application Table below lists devices that either are approved and supported by Honda or are known to have completed and passed an independent, exhaustive validation program with our i-HDS software suite.

Manufacturer VCI Name Version Information Notes
Firmware J2534 API
DENSO DST-i 2.00.0010* 04.04 This is the current generation VCI used by Honda and Acura dealers. Honda routinely validates the functionality and provides customer support for this device.
Bosch MVCI  3.01.54* 04.04 This is the previous generation VCI used by Honda and Acura dealers. Honda routinely validates the functionality and provides customer support for this device.
Drew Technologies MongoosePro Honda  1.7.7** 04.04 This company has completed an independent i-HDS validation and claims it to function with the i-HDS software. Honda does not provide ongoing validation, nor customer support for this device.
Dearborn Group d-briDGe Pro  3.303** 04.04 This company has completed an independent i-HDS validation and claims it to function with the i-HDS software. Honda does not provide ongoing validation, nor customer support for this device.

* These versions may have been superseded. Honda provides the latest supported versions to current i-HDS subscribers.
** Version used in validation program. See Terms and Conditions and Important Notice Regarding Reprogramming below for more details.

 

DST-i Information:

 

MVCI Information:

 

techinfo.honda.com

 

 

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