4621B – Power Liftgate may Partially Lower – 2020-2021 Mazda CX-30

February 18, 2021 NHTSA CAMPAIGN NUMBER: 21V086000

Power Liftgate May Lower Unexpectedly

If the power liftgate unexpectedly lowers while a person is accessing the rear storage area of the vehicle, it can increase their risk of injury.

 

NHTSA Campaign Number: 21V086

Manufacturer Mazda North American Operations

Components STRUCTURE

Potential Number of Units Affected 13,857

 

Summary

Mazda North American Operations (Mazda) is recalling certain 2020-2021 CX-30 vehicles. When fully opened, the power liftgate may partially lower unexpectedly when the vehicle is parked facing uphill on a slope.

 

Remedy

Mazda will notify owners, and dealers will update the power liftgate control module software and inspect the serial number of the power liftgate drive unit, replacing it if necessary, free of charge. The recall is expected to begin April 19, 2021. Owners may contact Mazda customer service at 1-800-222-5500 option 4. Mazda’s number for this recall is 4621B.

 

Notes

Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.

 

Check if your Mazda has a Recall

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REPAIR PROCEDURE
Recall Campaign 4621B

Safety Recall 4621B – 2020-2021 CX-30 Power Liftgate May Partially Lower Unexpectedly

 

A. VEHICLE INSPECTION PROCEDURE

Verify that the vehicle is within the following ranges:

 

CAUTION:  THIS PROCEDURE IS INTERIM AS THERE IS NO PROCEDURE TO REPLACE THE RAM ASSEMBLIES.

Models	Subject VIN range	Subject production date range
2020-2021MY CX-30	3MVDM**** LM 100116 – 140310 3MVDM**** MM 200017 – 232944	From October 1, 2019 through  November 24, 2020

The asterisk symbol “*” can be any letter or number.

• If the vehicle is within the above ranges, proceed to Inspection and Repair Procedure
• If the vehicle is not within the above ranges, return vehicle to the customer or inventory.

Perform a Warranty Vehicle Inquiry using your eMDCS System and inspect vehicle for Campaign Label Recall 4621B attached to the vehicle’s hood or bulkhead. Refer to eMDCS System – Warranty Vehicle Inquiry Results table below.

NOTE: Be sure to verify Recall number as the vehicle may have multiple Recall labels.

 

eMDCS System – Warranty Vehicle Inquiry Results:

If eMDCS displays:	Campaign Label is:	Action to perform:
RECALL 4621B OPEN	Present	Email Dealer Recall Help or Contact Warranty Hotline at (877) 727-6626 option 3 to update vehicle history.
	Not present	Proceed to “2. REPAIR PROCEDURE”.
RECALL 4621B CLOSED	Present	Return vehicle to inventory or customer.
	Not present	Proceed to “3. CAMPAIGN LABEL INSTALLATION”.
RECALL 4621B IS NOT PRESENT	Does not apply	Recall does not apply to this vehicle. Return vehicle to inventory or customer

 

Flow chart 

 

VERIFY THE CONTENTS OF THE MDRT TOOL KIT

 

CAUTION:  The tool must be stored in your Mazda Tool Shed – any misplacement or failure to return the tool will result in a $1,000 charge to the dealer.  If your tool does not work, please fill out the Dealer Recall Help Form on MXConnect with the reason of tool failure AND the TOOL BARCODE # (see below).

 

Section B: Repair Procedure

 

Outline of Repair Procedure

 

A. Verify the LOT No. of the PLG drive units

B. Replace the affected PLG drive unit

1. Open the Liftgate and write down the 8 Digit Lot Number

2. There is a number (9 or 0 indicates year) followed by a letter (Indicates month) and 6 numbers. Input all 8 digits into the Lot Number calculator or an error will occur. Note: If there is no number before the letter, input 9 (2019 production).  Example : G050032 →9G050032

3. If the result is Not Affected replacement is not required. Reprogram power liftgate module with supplied SSPC5/4621B MDRT. This will be 96% of the vehicles.

4. IF THE RESULT IS “AFFECTED”, STOP AND PARK THE VEHICLE NO FURTHER REPAIRS CAN BE DONE UNTIL PARTS ARE AVAILABLE. CAR CANNOT BE SOLD UNTIL REPAIRED.

Remember to use the 4621B Lift Gate Lot Inspection Calculator

 

This is a different Calculator than the “Repair Calculator.”

 

Proceed to MDRT Programming

 

Service Caution for Reprogramming 

Do NOT touch the MDRT while Green or Blue light is blinking with frequent beep sound.

• During reprogramming operation, center display and instrument cluster may blink. This is NOT abnormal.
• DTC P2610 may be stored after reprogramming. Turn the engine-on and stay 5 seconds on idle. After then turn IG-OFF. Turn IG-ON and re-connect the MDRT.

MDRT will erase the DTC automatically.

 

NOTE:  Poor connection between the vehicle and MDRT and/or low voltage may result in abnormal termination and/or data corruption.

A. During reprogramming, connect the DCA8000 battery charger using the Reflash mode

 

Before reprogramming, pay attention to the vehicle condition and PC environment.

 

a. Turn off all the electrical loads, especially pay attention to A/C (blower), audio, rear defogger and headlights.

 

b. Perform self-test and verify no DTC is stored. If any DTC is stored, fix the concern and delete the DTC.

 

c. Disconnect all non-genuine aftermarket accessories.

 

PLG Power Lift Gate Programming

 

A. Reprogram the PLG (Power Lift Gate) Module

NOTE: If you suspect your MDRT Tool is bad or need an additional Tool, please contact    Dealer Recall Help on MXConnect > Warranty with at least 1 VIN AND the Tool Barcode Number.

 

1. Thoroughly read the service cautions on the prior pages to avoid module damage!

 

 

MDRT TOOL – TOOL WILL HAVE A XXXXXX STICKER

 

NOTE: If any of warning lamp illuminates or flashes in the instrument cluster, repair it according to the Workshop Manual before reprogramming using the MDRT for this campaign.

 

1. Switch the ignition to off.

2. Connect MDRT to the OBDII connector.

Note: Wait until the green/blue and the red LED turn on with “Ready” and “IG OFF” on the display,  go to next step.

3. Switch the ignition to on (Engine Off position)

4. Monitor the MDRT display.

 

Note: 

• The reprogramming needs approximately 30 minutes to complete. (Pulsing beeps will sound during the reprogramming）
• When the reprogramming has successfully done, the display shows “Repro OK” and bottom row will illuminate intermittently, and the green or blue LED will be blinking.

 

LED lights show the configuration status.

*There are two LED types for MDRT.

1. Green & Red (Serial number up to 02217)

2. Blue & Red (Serial number after 02218)

 

Handling Caution

Take care when handling the MDRT tool to avoid damage

• Avoid exposing it to high heat.
• Avoid exposing it to water.

To avoid module damage during reprogramming.

• Do not connect MDRT tool with the ignition on – Do not disconnect MDRT from OBDII connector.
• Do not start engine.
• Do not turn IG-Off.

Otherwise a module replacement may be required.

 

NOTE

When performing reprogramming with an MDRT:

• Verify that the room fuse is installed.
• Turn off all electric-type loads such as air-conditioning or the audio system and then connect battery charger.
• Do NOT touch the MDRT while Green or Blue light is blinking or when you hear a “beep” sound.
• During the reprogramming operation, the center display and instrument cluster may blink, which is NORMAL.

 

#5. Turn the ignition off.

 

#6. Disconnect the MDRT.

 

Refer to troubleshooting chart if display reads other than REPRO_OK or SECUL_NG.

• Do not disconnect until the ignition is off under any circumstance.

• Do not turn off ignition until programming is complete.

• Do not start vehicle during programming.

 

How to verify the reprograming results by display

Confirm that the display shows a message after completing reprogramming.

 

Troubleshooting

The number is related to the step number in the reprogramming procedure.

Text in bold mean the most possible cause.

 

No.	Technician’s operation	Vehicle status	MDRT status	LED status		Beep sound	Display
3-1	IG-ON	IG-ON	MDRT malfunction.	G or B	Off	Continuously beeping	Data Fail
				R	Illuminate
3-2	IG-ON with MDRT not securely connected	IG-ON	No power supplied.	G or B	Off	No beep
				R	Off
4-1	IG-ON	Not a subject vehicle	MDRT can’t identify vehicle. MDRT performs only deleting DTC.	G or B	Off	Continuously beeping	VIN_NG
				R	Blinking at intervals of 1 sec		No Target
4-2	IG-ON	IG-ON Batt. Voltage: 11 V or lower SOC: 75 % or lower	Check battery voltage. Stop reprograming.	G or B	Off	Continuously beeping	Repro NG
				R	Blinking at intervals of 1 sec		BATCHK
4-3	Poor MDRT connection during reprograming	IG-ON	No power supplied.	G or B	Off	No beep
				R	Off
4-4	Monitoring	IG-ON	Finish	G or B	Illuminate	Pulsing beeps	Rep Succ
	MDRT		reprograming DTCs have been detected	R	Blinking at intervals of 1 sec		DTC!!
4-5	IG-ON	IG-ON Reprograming failed	Verify reprograming result.	G or B	Off	Continuously beeping	Repro NG
				R	Illuminate		XXXXX

 

NOTE

In case of “No. 4-1”, verify the vehicle is subject to the SSPC5.

In case of “No. 3-1”, it may be caused by one of the following concerns: (see below)

 

• Data in the Module is broken. The possible causes are as follows.
  1. MDRT has been connected to the OBDII connector with the IGN already turned on.
  2. MDRT has been disconnected from OBDII connector during reprograming.
  3. Engine has been started or IG is turned off during reprograming.
• MDRT malfunctions.
• Verify the current file name in the vehicle by log view screen.

 

Check procedures after reprogramming

Check for DTC and confirm there is no stored DTC.

• DTC P2610:00 may be stored. If so, please start the engine and clear the DTC. NOTE: DTC U2120:00, U2030:51 or/and U2500:82 (Related DTCs of Forward sensing camera) may be stored and i-ACTIVSENSE warning light (amber) may turn on after driving. These

DTCs may not be stored just after reprograming. It may be stored after driving. To avoid stored DTC, you need to put the FSC into sleep mode.

 

C. CAMPAIGN LABEL INSTALLATION:

 

1. Fill out a blue “Campaign Label” (9999-95-065A-06) with Campaign No: “4621B”, your dealer code, today’s date.

 

2. Affix it to the hood or bulkhead as shown:

 

3. Return the vehicle to customer.

 

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Chronology of Defect

 

Power liftgate may partially lower on MY 2020 through MY2021 CX-30

 

November 18, 2019: Mazda received first field report of “Power liftgate doesn’t stay fully opened if vehicle was parked uphill” from outside of the US market.

 

December 10, 2019: As a result of the incident investigation, it was found that the incident occurred when the concerned vehicle was parked on a steep uphill grade where the slope angle was beyond the limit of vehicle specification. Mazda judged this was a rare case and decided to monitor the occurrence of similar incidents in the field.

 

July through August, 2020: Mazda received several field reports from outside of the US market, reporting “Power liftgate does not stay fully opened.” Mazda collected the involved power liftgate drive unit parts from the field and began an investigation into the root cause.

 

September, 2020: Mazda and the part supplier identified the root cause of this issue. It was found that the minimum retaining force specification of the power liftgate drive unit during liftgate operation was too low. Also, when vehicles are parked on steep uphill inclines and the power liftgate is operated in high ambient temperature, the support spring elasticity in the power liftgate drive unit may be reduced. These combined factors may cause the power liftgate drive unit retaining force to degrade and reduce the ability  to keep the liftgate fully opened.

 

September through November, 2020: Mazda decided to implement two countermeasures for mass production to improve the power liftgate performance. One was to implement a closed circuit in the power liftgate control module to apply increased power liftgate drive motor unitretaining force for supporting the opened liftgate. The other is to change the minimum limit of the specification for retaining force of the power liftgate drive unit.

 

November 25, 2020: Mazda implemented the above countermeasures on CX-30 for the U.S market.

 

December, 2020 through January, 2021: Mazda considered proper solutions to eliminate this failure in the field and developed repair methods. Also, Mazda determined the subject coverage of the affected vehicles with this failure in the field. Mazda had not received field reports of this defect from the U.S. market up to this time.

 

February 15, 2021: Mazda held a Quality Audit Committee meeting to review all available information to date, and out of an abundance of caution, determined to conduct a proactive field action on certain MY2020 and MY2021 CX-30 vehicles in the U.S. No accidents or deaths have been reported as a result of this defect.

 

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2 Affected Products

Vehicle

MAKE	MODEL	YEAR
MAZDA	CX-30	2020-2021

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4 Associated Documents

Chronology

RMISC-21V086-3518.pdf 14.684KB

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Defect Notice 573 Report

RCLRPT-21V086-8341.PDF 214.362KB

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Recall Acknowledgement

RCAK-21V086-5781.pdf 782.978KB

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Remedy Instructions and TSB

RCRIT-21V086-4213.pdf 603.027KB

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Latest Recalls Documents

https://www-odi.nhtsa.dot.gov/acms/cs/documentList.xhtml?docId=21V086&docType=RCL

For the most up to date documents from NHTSA for this Recall, click the lick above

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Last update on 2021-05-10 / Affiliate links / Images from Amazon Product Advertising API