Technical
Service Bulletin

Mazda North American Operations
Irvine, CA 92618-2922

Subject:
SHIFT SHOCK WHEN SHIFTING INTO 3RD, 5TH AND/OR REVERSE
AT HIGH ELEVATIONS

Bulletin No.: 05-003/18

Last Issued: 07/10/2018

BULLETIN NOTES
This bulletin supersedes the previously issued bulletin(s) listed below. The changes are noted below in Red.

Previously Issued TSBs: Date(s) Issued:
05-003/18

04/12/18

05-003/17

10/05/17

APPLICABLE MODEL(S)/VINS

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2017-2018 Mazda3 (Japan built) 2.0L with VINS lower than JM1BN******168517 (produced before
September 5, 2017)
2017-2018 Mazda3 (Japan built) 2.5L with VINS lower than JM1BN******190286 (produced before
April 2, 2018)
2017-2018 Mazda3 (Mexico built) 2.0L with VINS lower than 3MZBN******171648 (produced before
August 23, 2017)
2017-2018 Mazda3 (Mexico built) 2.5L with VINS lower than 3MZBN******222814 (produced before
April 28, 2018)
2017 Mazda6 with VINS lower than JM1GL******312333 (produced before April 2, 2018)
2018 CX-3 with VINS lower than JM1DK******330861 (produced before February 6, 2018)

DESCRIPTION
Some customers who drive at elevations higher than 3,300 ft (1,000 m) may complain of a shift shock felt
when shifting into 3rd, 5th and/or Reverse with no AT related DTCs stored. The symptom can be
temporarily repaired using the AT initial learning procedure, but may recur after multiple driving cycles.
Applicable situations:

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

Shifting up: 2-3 or 4-5
Shifting down: 4-3 or 6-5

NOTE: Shifting from 2-3 or 4-3 is more likely to be felt due to the gear ratio.



Shifting into Reverse: D-R, N-R or P-R

Page 1 of 3
CONSUMER NOTICE: The information and instructions in this bulletin are intended for use by skilled technicians. Mazda technicians utilize the proper tools/
equipment and take training to correctly and safely maintain Mazda vehicles. These instructions should not be performed by “do-it-yourselfers.” Customers
should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies,
customers should contact their nearest authorized Mazda dealership. Mazda North American Operations reserves the right to alter the specifications and
contents of this bulletin without obligation or advance notice. All rights reserved. No part of this bulletin may be reproduced in any form or by any means,
electronic or mechanical---including photocopying and recording and the use of any kind of information storage and retrieval system ---without permission in
writing.

© 2018 Mazda North American Operations, U.S.A.

Bulletin No.: 05-003/18

Last Issued: 07/10/2018

Improper control logic of the TCM may cause improper learning of R-3-5 brake engaging speed when the
vehicle is driven at high elevations. To correct this issue, the control logic of the TCM has been modified.
Customers having this concern should have their vehicle repaired using the following repair procedure.

REPAIR PROCEDURE
1. Verify customer concern.
2. Using IDS 109.02 or later software, reprogram the TCM to the latest calibration (refer to “Calibration
Information” table) by following the “Module Reprogramming” procedure.
NOTE:

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Verify the current TCM file name in the vehicle by the log view screen. If it is the same as found in
the chart below (or later), it is not necessary to reprogram the TCM.
Always update the IDS tool first, then follow the on-screen instructions to download the calibration
file for TCM reprogramming.
Refer to “Service Caution for reprogramming” on MGSS IDS Page.
After reprogramming, verify the file name matches with the chart below.

NOTE:

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It is not necessary to remove any fuses or relays during TCM reprogramming when the IDS screen
prompts you to do so. You may accidentally stop power to one of the TCM terminals and cause the
TCM to be blanked, or you may receive error messages during the IDS reprogramming procedure.
IDS shows the calibration part numbers after programming the TCM.
Please be aware that TCM calibration part numbers and file names listed in any Service Bulletin
may change due to future releases of IDS software, and additional revisions made to those
calibrations for service related concerns.
When reprogramming a TCM, IDS will always display the “latest” calibration P/N available for that
vehicle. If any calibration has been revised/updated to contain new information for a new service
concern/issue, it will also contain all previously released calibrations.
Start/Stop button vehicles only: DO NOT press the start/stop button during the
reprogramming process.
When performing this procedure, we recommend using the “Power Supply” mode in the
Battery Management System to keep the vehicle battery up to capacity. If a different charger
is used, make sure it does not exceed 20 AMPS. If it exceeds 20 AMPS, it could damage the
VCM.

3. After performing the TCM reprogramming procedure, clear DTCs.
4. After clearing DTCs, start the engine and confirm that no warning lights stay on.
NOTE:

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If any DTCs should remain after performing DTC erase, diagnose the DTCs using MGSS.
After TCM reprogramming, it is no longer necessary to road test the vehicle to “relearn” KAM (Keep
Alive Memory).

5. Perform “Initial Learning” according to the instructions on MGSS (INITIAL LEARNING).

Page 2 of 3
CONSUMER NOTICE: The information and instructions in this bulletin are intended for use by skilled technicians. Mazda technicians utilize the proper tools/
equipment and take training to correctly and safely maintain Mazda vehicles. These instructions should not be performed by “do-it-yourselfers.” Customers
should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies,
customers should contact their nearest authorized Mazda dealership. Mazda North American Operations reserves the right to alter the specifications and
contents of this bulletin without obligation or advance notice. All rights reserved. No part of this bulletin may be reproduced in any form or by any means,
electronic or mechanical---including photocopying and recording and the use of any kind of information storage and retrieval system ---without permission in
writing.

© 2018 Mazda North American Operations, U.S.A.

Bulletin No.: 05-003/18

Last Issued: 07/10/2018

CALIBRATION INFORMATION
Model Specification

Note

New File Name

Mazda3

2.0L

PS7S-21PS1-C

2.5L

PYKE-21PS1-B

US

Mazda6

US

without i-ELOOP PYJN-21PS1-B

Mazda6

US

with i-ELOOP

PYJR-21PS1-B

CX-3

US

2WD

PSGC-21PS1-B

CX-3

US

AWD

PSGD-21PS1-B

WARRANTY INFORMATION
NOTE:

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


This warranty information applies only to verified customer complaints on vehicles eligible for
warranty repair.
This repair will be covered under Federal Emissions Warranty (long term) or PZEV Emission
Warranty.
Additional diagnostic time cannot be claimed for this repair.

Warranty Type

A

Symptom Code

26

Damage Code

9W

Part Number Main Cause
Quantity
Operation Number / Labor
Hours:

5555-RP-TCM
0
XXN8NXFX / 0.3 Hrs.

Page 3 of 3
CONSUMER NOTICE: The information and instructions in this bulletin are intended for use by skilled technicians. Mazda technicians utilize the proper tools/
equipment and take training to correctly and safely maintain Mazda vehicles. These instructions should not be performed by “do-it-yourselfers.” Customers
should not assume this bulletin applies to their vehicle or that their vehicle will develop the described concern. To determine if the information applies,
customers should contact their nearest authorized Mazda dealership. Mazda North American Operations reserves the right to alter the specifications and
contents of this bulletin without obligation or advance notice. All rights reserved. No part of this bulletin may be reproduced in any form or by any means,
electronic or mechanical---including photocopying and recording and the use of any kind of information storage and retrieval system ---without permission in
writing.

© 2018 Mazda North American Operations, U.S.A.