DEALER RE-WORK DRW59
REPAIR PROCEDURE
The repair is a software update OR a check to make sure the software is at the current level with
an ODR upload. DO NOT STOP AT THE “SOFTWARE UPDATE SUMMARY” screen in MDARS. You
must continue to finish all steps in the entire procedure. You must have a “Software Update” entry
present in MDARS for the PCM showing updated OR at the current level. If you don’t have an
entry with an ODR update, bring the vehicle back in immediately for repair.
Module to be reprogrammed or checked to make sure it is at the current level: PCM

Dealer Re-Work (DRW59) – 2026MY CX-30 and 2026MY Mazda3 - Check
Engine Light On With DTC P0126:00
Table of Contents - Links in this document are provided for all steps below
Flowchart....................................................................................... Section A
Repair Procedure............................................................................ Section B
Vehicle Inspection Procedure and Preparation for Repair
1. Verify that the vehicle is within the following ranges and there is an OPEN DRW59
campaign in eMDCS:
SUBJECT VEHICLES
Model

Subject VIN range

Subject production date range

2026 CX-30
(MMVO production)

3MVDM**** TM 100015 – 141099

From August 5, 2025 through
February 26, 2026

2026 Mazda3
From July 2, 2025 through
JM1BP**** T1 850019 – 878007
(MC production)
February 25, 2026
The asterisk symbol “*” can be any letter or number. Only VINs in this range and with “Open” status
in eMDCS are subject to this DRW.
2. If the vehicle is in the range above and DRW59 is in OPEN status in eMDCS, proceed to Step 2.
If the vehicle does not have an OPEN DRW59 status, return the vehicle to the customer or
inventory.

eMDCS - Warranty Vehicle Inquiry Results
If eMDCS displays:
If the campaign is “OPEN” and no repair
date is displayed on the line with
CAMPAIGN DRW59, the campaign has
not been completed on this vehicle
If repair date is displayed for CAMPAIGN
DRW59, and is in “CLOSED” status
CAMPAIGN DRW59 is not displayed

Action to perform:
Proceed to “REPAIR PROCEDURE”.

Return vehicle to inventory or customer.
The vehicle is not affected by the DRW

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DEALER RE-WORK DRW59
REPAIR PROCEDURE
TECHNICIAN LEVEL REQUIRED: CERTIFIED OR ABOVE. Note: Technician repairing needs to be
Certified or above and does not need to be Senior or Master as long as they have had the
required training for ODR – Collection of Diagnostic Information.
CAUTIONS: Always check for an aftermarket device connected to the DLC port and
remove before proceeding with connection.

Section A: Flow Chart:

NOTE: This Flow Chart needs to be followed strictly and the
CAUTIONS must be read before proceeding
2026MY CX-30 or Mazda3
VIN affected by DRW59

Reprogram OR check to make sure software is
at the current level for the
following ECU by MDARS: PCM

Upload ODR data

Perform DTC inspection & Verify PCM was
updated OR at current level in MDARS

Repair completed.

----------END OF SECTION A---------Section B: Repair Procedure
Reprogram the PCM by MDARS and follow all steps as required as outlined in
Technical Service Bulletin (TSB) No. 01-006/26.
1. Click this link to perform the repair according to Technical Service Bulletin (TSB) No.
01-006/26.
2. Upload ODR Data – You must perform an ODR Upload for all repairs. The ODR upload is
required if the PCM is at the current level OR you did reprogram the PCM.
3. You must also wait 30 minutes to submit any warranty claim. If you do not wait, the claim
will reject in the system.
4. Go into MDARS in “No Vehicle Connected” mode to verify installation. You must check that
there is an entry in MDARS for “Software Update” for the PCM module. There must be an
entry if the PCM is at the current level, OR you did reprogram the PCM.

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DEALER RE-WORK DRW59
REPAIR PROCEDURE

----------END OF SECTION B----------

END OF REPAIR PROCEDURE

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