NHTSA ID Number: 10165015
Manufacturer Communication Number: B19-051
TSB/Document Date: 2019-09-18
Summary
Service Bulletin - The adaptive cruise control (ACC) turns off unexpectedly while it is in use, and the Collision Mitigation Braking System Problem. See Your Dealer. message appears on the MID.
Service Bulletin
19-051
September 12, 2019
Version 1
2019 RDX: ACC Turns Off While in Use
AFFECTED VEHICLES
Year
Model
VIN Range
2019
RDX
2WD
5J8TC1H3.KL000001 thru 5J8TC1H3.KL024744
2019
RDX
2WD Tech
5J8TC1H5.KL000001 thru 5J8TC1H5.KL024725
2019
RDX
2WD A-SPEC
5J8TC1H6.KL000001 thru 5J8TC1H6.KL025200
2019
RDX
2WD Advance
5J8TC1H7.KL000001 thru 5J8TC1H7.KL024911
2019
RDX
AWD Base
5J8TC2H3.KL000001 thru 5J8TC2H3.KL042489
2019
RDX
AWD Tech
5J8TC2H5.KL000001 thru 5J8TC2H5.KL042609
2019
RDX
AWD A-SPEC
5J8TC2H6.KL000001 thru 5J8TC2H6.KL042549
2019
RDX
AWD Advance
5J8TC2H7.KL000001 thru 5J8TC2H7.KL042534
SYMPTOM
The adaptive cruise control (ACC) turns off unexpectedly while it is in use, and the Collision Mitigation Braking
System Problem. See Your Dealer. message appears on the MID.
POSSIBLE CAUSES
The PGM-FI software cancels the ACC when a conflicting stop-and-go signal is detected in the software at the same
time.
CORRECTIVE ACTION
Diagnose the vehicle and, if directed by the results, update the PGM-FI software.
CLIENT INFORMATION:The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment, and
training to correctly and safely maintain your vehicle. These procedures should not be attempted by “do-it-yourselfers,” and you should not assume
this bulletin applies to your vehicle, or that your vehicle has the condition described. To determine whether this information applies, contact an
authorized Acura
automobile dealer.
©
2019 American Honda Motor Co., Inc. — All Rights Reserved
Page 1 of 3
DIAGNOSIS
Make sure all of these conditions are met before doing the repair:
•
The ACC was in use when the problem occurred.
•
The ACC cannot be set within the same drive-cycle.
•
The Collision Mitigation Braking System Problem. See Your Dealer. message appears on the MID.
•
After cycling the ignition, the ACC works and the MID message goes away.
•
An all DTC check only shows DTC U0401-92 (temporary stop of integrated driver support system).
If all of the conditions are met, make sure the PGM-FI software has the latest program ID.
Does the PGM-FI software have the latest program ID?
Yes - This bulletin does not apply; continue with normal system troubleshooting.
No - Go to REPAIR PROCEDURE to update the PGM-FI software.
NOTE
If other DTCs are set, diagnose them before addressing DTC U0401-92.
WARRANTY CLAIM INFORMATION
The normal warranty applies.
Operation
Number
Description
Flat Rate
Time
Defect
Code
Symptom
Code
Template
ID
Failed Part Number
1255D8
Update the PGM-FI
software.
0.2 hr
03214
03203
B19051A
37805-5YF-A88
Skill Level: Repair Technician
SOFTWARE INFORMATION
NOTE
Unnecessary or incorrect repairs resulting from a failure to update the i-HDS are not covered under warranty.
i-HDS Software Version: 1.005.033 or later
J2534 Rewrite Software Information:
•
PC Application Version 1.1.0.6 or later
•
Database update 06-SEP-2019 or later
Before beginning the repair, make sure that both the i-HDS and J2534 Rewrite software are updated as listed
above.
Do only the update listed in this service bulletin.
You cannot apply the updates with the MVCI as a standalone tool. To update the software you must use the MVCI
or the DST-i interface in conjunction with the J2534 Rewrite PC application on the i-HDS.
Page 2 of 3
For more information about updating the i-HDS, the MVCI, and vehicle systems, refer to service bulletin 01-026,
Updating Control Units/Modules.
Year/Model
Software
System
Program ID (or later)
Program P/N (or later)
2019 RDX 2WD Base
PGM-FI
37805-5YF-A780
37805-5YF-A78
201 RDX 2WD Tech
PGM-FI
37805-5YF-A780
37805-5YF-A78
2019 RDX 2WD A-SPEC
PGM-FI
37805-5YF-A780
37805-5YF-A78
2019 RDX 2WD Advance
PGM-FI
37805-5YF-A580
37805-5YF-A58
2019 RDX AWD Base
PGM-FI
37805-5YF-A880
37805-5YF-A88
2019 RDX AWD Tech
PGM-FI
37805-5YF-A880
37805-5YF-A88
2019 RDX AWD A-SPEC
PGM-FI
37805-5YF-A880
37805-5YF-A88
2019 RDX AWD Advance
PGM-FI
37805-5YF-A680
37805-5YF-A68
REPAIR PROCEDURE
1. Update the PGM-FI software using the i-HDS J2534 Rewrite software with the MVCI or DST-i. Refer to service
bulletin 01-026,Updating Control Units/Modules.
END
Page 3 of 3
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TSB/Document ID: B19-051
Replacement Service Bulletin Number:
MFR Communication Date: 2019-09-12
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: FORWARD COLLISION AVOIDANCE: ADAPTIVE CRUISE CONTROL
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
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