Service Bulletin
February 26, 2016

15-051
02609 Version 3

HFL Poor Sound Quality or Static
Supersedes 15-051, Titled HFL Poor Sound Quality or Static, dated December 9, 2015, to revise the information
highlighted in yellow.
AFFECTED VEHICLES
Year
Model
2013–16
RDX

Trim
ALL

VIN Range
ALL

REVISIOIN SUMMARY
Title has been changed from “HFL Poor Quality or Static” to “HFL Poor Sound Quality or Static”.
BACKGROUND
When the client uses the HFL, the person they are speaking with may experience poor sound quality, static, or the
speaker’s voice cutting out.
CORRECTIVE ACTION
Cross-check the HFL part number and the HFL software version table in step 2 of REPAIR PROCEDURE to verify if the
HFL control unit can be updated.
NOTE: Make sure there is a match between the HFL P/N and software version under SOFTWARE INFORMATION.
SOFTWARE INFORMATION
NOTE: Unnecessary or incorrect repairs resulting from a failure to update the HDS are not covered under warranty.
HDS Software Version: 3.017.012 or later
HFL (HFT) Control Unit Update Version: 2.1.0.0 or later

Before beginning the repair, make sure that both the HDS and the HFL (HFT) Control Unit Update are updated as listed
above.
Do only the update listed in this service bulletin.

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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.

© 2016 American Honda Motor Co., Inc. – All Rights Reserved

WARRANTY CLAIM INFORMATION
Operation
Number

Description

Flat Rate
Time

Defect
Code

Symptom
Code

Template
ID

Failed Part Number

0525A1

Update the HFL
software.

0.3 hr

03214

03217

15-051N

39770-TX4-A01

REPAIR PROCEDURE
1. Once the HFL (HFT) Control Unit Update tool is connected to the HFL unit in the vehicle, you’ll see the HFL unit part
number and HFL software version as shown. Refer to S/B 12-032, Updating Programmable HFL (HFT) Control Units
for information about verifying the software version.

2. Check the HFL part number and software version against the table below.

•
•

Year

Model

Trim

HFL Unit Part Number

2013–14
2013–16
2013–15

RDX
RDX
RDX

Base
Base
Technology Package

39770-TX4-A01
39770-TX4-A02
39770-TX4-A21

HFL Software
Version
01.07.000
01.02.000
01.05.000
01.08.000
02.00.000

If the HFL unit P/N and software version are both listed in the table, go to step 3.
If the HFL unit P/N and software version both do not appear in the table, do not update the vehicle. If you try to apply
the update, the audio and HFL control unit may be damaged.

3. Update the HFL control unit software to 02.02.000. Refer to S/B 12-032, Updating Programmable HFL (HFT) Control
Units.
NOTE: If Siri was previously enabled as an accessory, re-enable it by following the accessory installation instructions
BII 50045, Siri Eyes Free Mode HFL Software.
4. Verify the HFL software was updated to the new version 02.02.000. If the software was not updated, cycle the ignition
OFF, then back to ON and go back to step 3 to repeat the update procedure.

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