B20-053 Service Bulletin/Repair Instructions

Service Bulletin
20-053
May 25, 2021
Version 3
MIL is Flashing with Loss of Power
Supersedes 20-053, dated April 15, 2021, to revise the information highlighted in yellow.

AFFECTED VEHICLES

Year
Model
Trim Level
VIN Range
2019-20
RDX
ALL
ALL
2021
RDX
2WD
5J8TC1…ML000001 thru 5J8TC1…ML012182
2021
RDX
SH-AWD
5J8TC2…ML000001 thru 5J8TC2…ML024481
2021
RDX
SH-AWD (PMC)
5J8TC2…MY000001 thru 5J8TC2…MY000192
2021
TLX
ALL
ALL
REVISION SUMMARY

•
Under AFFECTED VEHICLES, 2021 TLX was included and VIN range was added to RDX.
•
Under CORRECTIVE ACTION, TLX was included.
•
Under WARRANTY INFORMATION, 2021 TLX information was added.
•
Under SOFTWARE INFORMATION, 2021 TLX information was added and reprogramming software information

updated.
SYMPTOM

The MIL is flashing with loss of power.

POSSIBLE CAUSE

Humid air within the intake tract may condense and accumulate excessive moisture during steady driving.

CORRECTIVE ACTION

TLX only: Update the PGM-FI.

RDX only: Update the PGM-FI and replace the intercooler, the intercooler outlet pipe assembly, and the intercooler outlet

hose.

PARTS INFORMATION

Part Name
Part Number
Quantity
Intercooler Kit
06198-5YF-305
1
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.
© 2021 American Honda Motor Co., Inc. – All Rights Reserved
Page 1 of 8
REQUIRED MATERIALS

Part Name
Part Number
Quantity
Honda TB2720C Water Base Lubricant

(1 bottle will repair 20 vehicles)
08734-0013
1
WARRANTY CLAIM INFORMATION

The normal warranty applies.

Operation

Number
Description
Flat Rate

Time
1115A6
Update the PGM-FI software,

and replace the intercooler
1.5 hr
B20053A
1115A6A
Update the PGM-FI software

and replace the intercooler.
1.9 hr
B20053B
For multi view camera

adjustment (includes picture

inspection) and Fog light aimadd

1115A6B
Update the PGM-FI software

and replace the intercooler.
Defect

Code
00701
Symptom

Code
Template ID
Failed Part Number
19710-6B2-A01
03217
1.8 hr
B20053C
1.6 hr
B20053D
For multi view camera

adjustment only (includes

picture inspection)- add

1115A6C
Update the PGM-FI software

and replace the intercooler.

For fog light aim only- add
1255D8
TLX: Update the PGM-FI

software
0.2 hr
03214
B20053E
37805-6S8-A54
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.

Before beginning the repair, make sure all diagnostic and reprogramming software are updated as listed.

i-HDS Software Version
1.006.013 or later
HDS Software Version
3.104.014 or later
J2534 Rewrite Software Information

PC Application Version
1.2.1.1
Database Update
12-MAY-2021 or later
NoticeDB Version
12-MAY-2021 or later
Page 2 of 8
Do only the update listed in this service bulletin.

To update the software you must use the the DST-i interface in conjunction with the J2534 Rewrite PC application on the iHDS.

For more information about updating the i-HDS, and vehicle systems, refer to service bulletin 01-026, Updating Control

Units/Modules.

Year/Model
Vehicle System
Program ID (or later)
2019 RDX Advance
37805-5YF-C510
2019 RDX Advance (SH-AWD)
37805-5YF-C710
2019 RDX A Spec, Base, Tech
37805-5YF-A910
2019 RDX A Spec (SH-AWD), Base (SH-AWD), Tech (SH-AWD)
37805-5YF-C810
2020 RDX Advance
37805-5YF-A140
2020 RDX Advance (SH-AWD)
37805-5YF-A240
2020 RDX A Spec, Base, Tech
37805-5YF-A340
2020 RDX A Spec (SH-AWD), Base (SH-AWD), Tech (SH-AWD)

2021 RDX Advance
PGM-FI
37805-5YF-A440

37805-5YF-C120
2021 RDX Advance (SH-AWD)
37805-5YF-C220
2021 RDX A Spec, Base, Tech
37805-5YF-C320
2021 RDX A Spec (SH-AWD), Base (SH-AWD), Tech (SH-AWD)
37805-5YF-C420
2021 TLX Advance
37805-6S8-A540
2021 TLX Base, Tech, A Spec
37805-6S8-A640
2021 TLX Advance (SH-AWD)
37805-6S8-A740
2021 TLX Base (SH-AWD), Tech (SH-AWD), A Spec (SH-AWD)
37805-6S8-A840
UPDATE THE PGM-FI SOFTWARE

You must update the PGM-FI software using the i-HDS J2534 rewrite software with the DST-I for this repair to be

complete. Refer to Service Bulletin 01-026, Updating Control Units and Modules for more information.

REPAIR PROCEDURE

1. Remove the front grille cover.
Page 3 of 8
2. Remove the front bumper to gain access to the intercooler.

•
For some models, disconnect the connectors.
•
Remove the fasteners.
Page 4 of 8
•
Release the clips.
3. Remove the intercooler.
Page 5 of 8
4. Remove the intercooler outlet hose.

5. Remove the intercooler outlet pipe assembly (to access the top hose clamp you must remove the air cleaner case).
6. Install the new intercooler and new gasket from the kit. Then, reuse the rubber mounts and mounting hardware and

torque the two mount bolts to 9.3 N.m (6.9 lb-ft) and the two bolts connecting the intercooler to the inlet pipe

22 N.m (16 lb-ft).
Page 6 of 8
7. Transfer the mounting hardware. Then, install the intercooler outlet pipe assembly to the vehicle, and torque the two

bolts to 9.3 N.m (6.9 lb-ft).

NOTE: If necessary, use Honda TB2720C Water Base Lubricant (P/N 08734-0013) when sliding on the hose. See job

aid, Turbocharger Hose and Hose Band Guidelines.
8. Slide the intercooler outlet hose onto the intercooler outlet pipe assembly. Then, install the hose band into position by

lining up the paint mark, and the mark on the intercooler outlet pipe assembly.
Page 7 of 8
9. Tighten the hose bands to the specified condition below.
10. Install the front bumper.

11. Slide intercooler outlet hose B onto the intercooler outlet pipe assembly, then, install the hose band.

12. Install the air cleaner case.

13. If equipped with multi view camera, do the aiming procedure in the service information.

14. If equipped with fog lights, do the adjustment procedure in the service information.

END
Page 8 of 8

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