Safety Recall 5723B – 2023 Mazda CX-50 Trailer Hitch Harness May Detach

SEOCONTENT-START

MAZDA D A ER MAIL March 3, 2023 Attention: Mazda General, Parts and Service Managers Subject: Notification of Safety Recall 5723B – 2023MY Mazda CX-50 Trailer Hitch Harness May Detach. Dear Mazda Dealer Partners, Mazda Motor Corporation has decided to conduct a Safety Recall Campaign on certain 2023MY CX-50 vehicles sold in the United States. Please see the description, model, year, and VIN ranges below. Subject Vehicles: Model Subject VIN range Subject production date range 2023 CX-50 ?MM VA**** PN 100233-123654 From January 18, 2022 through October 28, 2022 The recall population is 560 vehicles. Mazda is aware of 311 vehicles in the above VIN range sold with a Port Installed Trailer Hitch, however, based on Dealership Accessory Parts Sales there are approximately 249 unidentified additional vehicles that will require dealership action. Additional vehicles will be added to the campaign based on inspection results at Mazda dealerships. Mazda Dealer Action Requested: Review all parts sales from your dealership for the Mazda Genuine Accessory part number(s) VA40V7780 and/orVA41 V7780 (Hitch Harness), and match the customer with a VIN. Please check the VIN on eMDCS to verify if Recall 5723B is present. If Recall 5723B is not present, please fill out Dealer Recall Help on OneMazda. so the Recall team can add the VIN to this campaign. In addition, if you are servicing a MY2023 Mazda CX-50, and notice the factory installed hitch harness, please verify the VIN is present for Recall 5723B. If the VIN is not present, please fill out Dealer Recall Help on OneMazda. Additionally, please check your parts inventory for on hand stock of part numbers VA40V7780 and/or VA41 V7780. If you find parts on hand, immediately contact your Claims Representative for a request to file a Defective Parts claim and further instructions. Once the material is received at your facing PDC a credit will be issued. Send the request for a Defective Claim to: claims@mazadusa.com All Mazda dealers must use the repair calculator available in Mazda Global Service Support (MGSS) under Campaign 5723B to identify which specific part needs replacement. The replacement will either be a 4- pin or 7 -pin harness based on which part is installed on the vehicle. Concern Outline: On certain 2023MY CX-50 vehicles with the installed Mazda Genuine Accessory trailer hitch harness, the harness may become loose or detached, causing insufficient clearance to underbody components. The detached trailer wire harness could be damaged due to contact with the vehicle’s exhaust components or road debris while driving. If the harness becomes damaged, lights and/ or braking of a connected trailer may become inoperative, increasing the risk of a crash. For all subject vehicles: The Mazda trailer hitch harness will be replaced using an improved trailer hitch harness kit. There will be no charge for this service to vehicle owners. Parts Ordering: The repair parts are currently in production at the supplier and are expected to be available in April. We will send an update when parts are ready, and you can contact Dealer Recall Help to order. If an affected 2023 CX-50 arrives at your dealership, the recall team will contact the DAG to place a CEO order for you. All Mazda dealers must use the repair calculator available in MGSS under Recall 5723B to identify which specific part needs replacement. Owner Notification: Mazda will notify owners of affected vehicles for this campaign no later than April 28, 2023. Owners will be asked to bring their vehicle to the nearest Mazda dealership for repairs. This recall also affects 2,592 customers who purchased their vehicle new in Canada. As a reminder, any vehicle from Canada or the U.S. can be repaired at any Mazda dealership in North America. If you have a Mazda Canada vehicle in your dealership, please fill out Dealer Recall Help or contact the Mazda warranty department directly. To help you effectively perform this recall, Mazda has developed the following resources: 1. Parts and Warranty Information and Repair Procedures will be posted on MGSS on or before March 8, 2022 by the end of the business day. Searching the campaign with a VIN is available the same day. Keyword searching in MGSS for the campaign will be available the following business day. 2. For Warranty questions, please contact the Warranty Hotline at warrantydept@mazdausa.com 3. For parts questions, contact the Corporate Dealer Assistance Group at (877) 727-6626 Option 2. 4. For recall related questions, please fill out the Dealer Recall Help Form located on OneMazda. Please make certain the appropriate personnel in your dealership are aware of these resources and are familiar with the details of this recall before responding to customer inquiries. We apologize for any inconvenience this recall may cause you and your customers. Your understanding and support in carrying out this campaign are greatly appreciated. Sincerely, Mazda North American Operations 47 ,\’IAZOA NORTH A.’1ERICAN OPERATIONS

**************************************************************************************************************

OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-135 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Mazda North American Operations Submission Date : MAR 01, 2023 NHTSA Recall No. : 23V-135 Manufacturer Recall No. : 5723B Manufacturer Information : Manufacturer Name : Mazda North American Operations Address : 1025 Connecticut Avenue, NW Suite 910 Washington DC 20036 Company phone : 800-222-5500 Population : Number of potentially involved : 560 Estimated percentage with defect : 2 % Vehicle Information : Vehicle 1 : 2023-2023 MAZDA CX-50 Vehicle Type : LIGHT VEHICLES Body Style : ALL Power Train : GAS Descriptive Information : – Recall population determined by the production record of vehicles which may have had a Mazda Genuine Accessory trailer wire harness installed using an inappropriate routing and attachment method during port processing or aftermarket installations. – Vehicles not included in the recall were not equipped with a Mazda Genuine Accessory trailer wire harness. The following is the affected number of vehicles by MY/Make/Model: MY2023 Mazda CX-50 built at Mazda Toyota Manufacturing （MTM）, USA : 560 units. Production Dates : JAN 18, 2022 – OCT 28, 2022 VIN Range 1 : Begin : 7MMVABBM1PN100233 End : 7MMVABCMXPN123654 ✔ Not sequential Description of Defect : Description of the Defect : The accessory trailer wire harness may detach, causing insufficient clearance to underbody components. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : A detached trailer wire harness may become damaged due to contact with exhaust components or road debris while driving. If the harness becomes damaged, lighting and/or braking of a connected trailer may become inoperative, increasing the risk of a crash. Description of the Cause : Due to improper installation, trailer wire harnesses may become loose or detached. Part 573 Safety Recall Report 23V-135 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 Identification of Any Warning that can Occur : There is no warning preceding the occurrence of this defect. Involved Components : Component Name 1 : Trailer Hitch Harness Component Description : Trailer Hitch Wiring Harness Component Part Number : VA40V7780 (/w 4-pin connector), VA41V7780 (/w 7-pin connector) Supplier Identification : Component Manufacturer Name : Curt Manufacturing Inc. Address : 6208 Industrial Dr Eau Claire Wisconsin 54701 Country : United States Chronology : August 5, 2022: MTM Logistics Quality regular inspection detected five vehicles at Mazda Port facilities with peeling or detached wire harness adhesive mounting brackets. Mazda began to investigate the concern; installation of the harness was halted to prevent any potential further outflow of the concern into the field. August 15, 2022: Inspection of field units with accessory harness kits installed by dealers did not show recurrence of the peeling/detached adhesive. September 2022~December 2022: Mazda conducted investigations of the concern to assess root cause, potential effects on any field units with the condition, and review of actual field conditions. January 2023~Middle of February 2023： Mazda did not receive any field reports related to this concern through this period. However, Mazda continued to identify the total population of potentially affected vehicles in North American markets. February 22, 2023: 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 MY 2023 CX-50 vehicles equipped with accessory trailer hitch wire harnesses. Part 573 Safety Recall Report 23V-135 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : Owners will be notified by mail and instructed to take their vehicle to a Mazda dealer. Dealers will rework affected units using an improved trailer hitch harness kit. Mazda was able to identify 311 VINs with trailer hitch harness kits through internal systems. However, accessory kits are generally not traceable to unique VINs. For those trailer hitch harness kits that could not be matched to a specific VIN, Mazda will ask dealers to attempt to make contact with original purchasers to notify them of the concern. Dealers will be given copies of owner letters to forward to purchasers. A reimbursement program will not be offered as subject vehicles are under new vehicle warranty coverage. How Remedy Component Differs from Recalled Component : Remedy components have an improved design which uses a revised routing and installation method. Recalled Parts name: Trailer Hitch Harness Part number: VA40V7780 (/w 4-pin connector), VA41V7780 (/w 7-pin connector) Identify How/When Recall Condition was Corrected in Production : Since affected parts are installed as a port-installed, dealer-installed, or over-the-counter accessory, production countermeasures are not applicable. To correct the condition for new installations, improved trailer hitch harness kits with a revised routing and installation method will be made available as soon as possible. Recall Schedule : Description of Recall Schedule : Notification to dealers is expected to occur on or before March 3rd, 2023. Mailing of owner notification letters is expected to be completed on or before April 28, 2023 Planned Dealer Notification Date : MAR 03, 2023 – MAR 03, 2023 Planned Owner Notification Date : APR 28, 2023 – APR 28, 2023 * NR – Not Reported

**************************************************************************************************************

Parts are not available for campaign 5723B until late April 2023 – TBD. You will be able to order parts once this message is removed from this document. If you have a customer who is concerned about the campaign prior to late April 2023, contact Dealer Recall Help and we will advise next steps. As a reminder, while this campaign is in “NOT LAUNCHED” status, the Missed Recall Report is not affected. Only campaigns in “OPEN” status and launched after 2013 are on the Missed Recall Report. Attention All Mazda Dealers: PARTS AND WARRANTY INFORMATION Safety Recall 5723B Page 1 of 3 PARTS AND WARRANTY INFORMATION Safety Recall 5723B Safety Recall – 2023 CX-50 Trailer Tow Hitch Harness May Detach CONDITION OF CONCERN On certain 2023MY CX-50 vehicles with the installed Mazda Genuine Accessory trailer hitch harness, the harness may loosen or detach, causing insufficient clearance to underbody components. The detached trailer wire harness could become damaged due to contact with the vehicle’s exhaust components or road debris while driving. A damaged harness can cause the lights and / or braking of a connected trailer to become inoperative, increasing the risk of a crash. Both the 4-pin and the 7- pin harnesses are affected. OUTLINE OF REPAIR This repair is to remove the old Trailer Hitch Harness and install a new updated harness with a different routing than the original factory, dealer or customer installed harness. SUBJECT VEHICLES Model Subject VIN range Subject production date range 2023 CX-50 ?MM VA**** PN 100233 – 123654 From January 18, 2022, through October 28, 2022 The asterisk symbol “*” can be any letter or number. OWNER NOTIFICATION Mazda will notify the owners by first class mail no later than April 28, 2023. PARTS INFORMATION Description Part Number Quantity Note 4-pin hitch harness VA40V7780A 1 This will not fit the 7-pin harness kit. 7-pin hitch harness VA41V7780A 1 This will not fit the 4-pin harness kit. Campaign Label 9999-9 5-065A-06 1=50 Obtain in Mazda labels e-Store WARRANTY CLAIM PROCESSING INFORMATION Install trailer hitch harness Process Number AP011A Symptom Code 99 Damage Code 99 Causal Part Number 4-pin harness VA40V7780A OR 7-pin harness VA41V7780A Quantity 1 Labor Operation Number XXWARXRX Labor Hours 0.4 hrs. Page 2 of 3 RENTAL CAR INFORMATION PARTS AND WARRANTY INFORMATION Safety Recall 5723B Rental expenses exceeding the two-day limit or over the per day limit set by Mazda Warranty policy will require prior Warranty Department Authorization prior to giving the rental to the customer, regardless of the reason. Please refer to the Mazda Rental Car Reimbursement Program policy in the Mazda Warranty Policies and Procedures Manual. Mazda recommends the usage of the MCVP loaner vehicle when available. If all MCVP loaner vehicles are in use and unavailable, and the customer needs a rental car, then use your local rental facility and offer a rental car. Be sure that every effort is made to repair the car within one business day or less, so the next customer can receive the same experience. Rental expenses exceeding the two-day limit will require prior Warranty Department Authorization, as outlined in the Mazda Rental Car Reimbursement Program policy. Rental Car Warranty Claim Information MCVP Vehicle Preferred Rental Agency Vehicle Warranty Type Code A Symptom Code 99 Damage Code 99 Part Number Main Cause 5555-57-23BR Part Quantity 0 Labor Operation Code MM024XRX Labor Hours N/ A 0 Sublet – Rental Car Sublet Invoice MCVP does not require claim Number from Rental Invoice Number submission or Dealer Purchase Order Sublet Type Code Enter “Z9″ ( other) Sublet Amount Up to $30.00 per day for the number of days customer had rental car Sublet Text Number of days rental car was supplied to customer Page 3 of 3

**************************************************************************************************************

Page 1 of 14 Parts are not available for campaign 5723B until late April 2023 – TBD. You will be able to order parts once this message is removed from this document. If you have a customer who is concerned about the campaign prior to late April 2023, contact Dealer Recall Help and we will advise next steps. As a reminder, while this campaign is in “NOT LAUNCHED” status, the Missed Recall Report is not affected. Only campaigns in “OPEN” status and launched after 2013 are on the Missed Recall Report. Attention All Mazda Dealers: Repair Procedure -Trailer Tow Hitch Harness Safety Recall 5723B Page 2 of 14 Repair Procedure -Trailer Tow Hitch Harness Safety Recall 5723B Safety Recall – 2023 CX-50 Trailer Tow Hitch Harness May Detach A. VEHICLE INSPECTION PROCEDURE 1. Verify that the vehicle is within the following ranges: NOTE – Because this recall is for a factory accessory, not all vehicles have been identified. Please check if the vehicle has a Genuine Mazda hitch and/ or Mazda hitch harness attached. lffound and recall is not displayed, contact Dealer Recall Help so the vehicle can be added to the recall. Model Subject VIN range Subject production date range 2023 CX-50 ?MM VA**** PN 100233-123654 From January 18, 2022 through October 28, 2022 The asterisk symbol”*” can be any letter or number. – If the vehicle is one of the above listed, proceed to Step 2. – If the vehicle is not within the above ranges, return vehicle to the customer or inventory. 2. Perform an eMDCS Warranty Vehicle Inquiry and inspect the vehicle for a Campaign Label with 5723B attached to the vehicle’s hood, driver door or firewall. NOTE: Be sure to verify the campaign number as the vehicle may have multiple campaign labels. CAMPAIGN LABEL CAMP JGJ NO:. __ _ DEALER CCDE:. ___ _ DATE: II ‘””‘ eMDCS – Warranty Vehicle Inquiry Results: If eMDCS displays: Campaign Label is: Action to perform: Fill out Dealer Recall Help on OneMazda If no repair date is displayed on the Present contact or the Mazda Warranty Department line with CAMPAIGN 5723B, it has not at warrant)’.dept@mazdausa.com to review been completed on this vehicle vehicle history. Not present Proceed to “REPAIR PROCEDURE”. Present Return vehicle to inventory or customer. If repair date is displayed for Complete a label and apply to vehicle’s hood CAMPAIGN 5723B is “CLOSED” Not present with repair date and dealer code from eMDCS Warranty Inquiry. Follow instructions to check for a factory or CAMPAIGN 5723B is not displayed See action to dealer installed hitch harness. Please check perform if the vehicle has a Genuine Mazda hitch and/ or Mazda hitch harness attached. Page 3 of 14 ① ② ③ ④ ⑤ ⑥ ⑦ ⑧ ⑨ REPAIR OUTLINE Repair Procedure -Trailer Tow Hitch Harness Safety Recall 5723B This repair is to remove the old Trailer Hitch Harness and install a new updated harness with a different routing than the original factory, dealer or customer installed harness. PARTS INFORMATION Description Part Number Quantity Note 4-pin hitch harness VA40V7780A 1 Only replace a 4-pin original harness with a 4-pin harness 7-pin hitch harness VA41V7780A 1 Only replace a 7-pin original harness with a 7-pin harness Campaign Label 9999-95-065A-06 1 =50 labels Obtain in Mazda e-Store TOOL INFORMATION No. Parts Name Wire cutters Fork panel removal tool Plastic scraper tool lsopropyl Alcohol Shop Towels Body Frame Tape (included in new harness kit) 5 black Zip ties (included in new harness kit) Anti-Corrosion sealant Trailer hitch 4 and 7-pin tester or automotive test light GENERAL CAUTIONS/WARNINGS – PLEASE READ: Air Bag Connectors and Battery Disconnect: Do not work on the vehicle without disconnecting the vehicle battery. Customer Personal Items: If personal belongings need to be removed from vehicle interior trunk area remember to neatly replace any customer items in the same location after the repair is completed. Damage to interior or exterior: Care should be taken, and protective cover(s) used when working on any Mazda vehicle. Damage to any components, interior trim, body panels and paint will not be reimbursed by Mazda. This will also delay repairs and negatively affect the Page 4 of 14 Repair Procedure -Trailer Tow Hitch Harness Safety Recall 5723B customer experience and Mazda dealer-customer relationship. B. REPAIR PROCEDURE Remove the Installed Trailer Tow Hitch Harness 1. Use the repair calculator in MGSS to check for the correct part to install. Then check the vehicle to ensure the harness matches. This will be either a 4 pin or 7-pin harness (not both). Only replace the new harness with the same harness on the vehicle. If the vehicle and the calculator do not match, contact Dealer Recall Help for assistance. 2. Disconnect the vehicle battery cable following the procedure in MGSS. NEGATIVE BATTERY DISCONNECT 3. Place the vehicle on a lift and raise to a suitable height to access the rear interior and the hitch wiring under the rear bumper. 4. Raise the rear hatch and remove the interior trunk board, interior trunk foam and set aside in a safe place. a. NOTE: Customer Personal Items – If customer personal belongings need to be removed from vehicle interior trunk area remember to neatly replace any items in the same location after the repair is completed. 5. Locate the exterior trailer hitch harness and disconnect it. Page 5 of 14 ① Repair Procedure -Trailer Tow Hitch Harness Safety Recall 5723B 6. Using wire cutters cut the exposed wires (female connector) from the exterior harness near the start of the black loom tubing. 7. Remove harness from interior of vehicle by pushing existing grommet down through the hole and out the bottom of the vehicle. Page 6 of 14 ② 7 PIN Repair Procedure -Trailer Tow Hitch Harness Safety Recall 5723B 8. Using a fork style panel clip removal tool tow bar. to remove the harness cable mount clips from 9. Remove either the 7 pin or 4 pin connector. Remove the 7 pin connector from back of 7 pin trailer connector and discard exterior harness. Page 7 of 14 ③. ④ ⑤ ⑥ ⑧ 4 PIN Repair Procedure -Trailer Tow Hitch Harness Safety Recall 5723B Or remove the 4 pin connector from tow bar bracket and discard exterior harness. 10. Locate the exposed hole where the hitch harness used to go through, under the vehicle near the exhaust. a. Remove any silicone around the hole if present with a plastic scraper tool b. Using isopropyl alcohol and a shop towel , thoroughly clean the hole surface area to be covered. Let alcohol dry completely (30 to 60 seconds). c. Figure 1. Apply body frame tape from new harness kit over hole. Press firmly to ensure complete coverage and adhesion. Use 2 pcs if hole is not completely covered. d. Figure 2. On the inside of the vehicle, apply a silicone-based, anti-corrosion sealer to edge of hole from interior side of vehicle. Page 8 of 14 BODY FRAME TAPE ⑥ GOES ON EXTERIOR UNDERSIDE OF VEHICLE Figure 1 Figure 2 Install the New Trailer Tow Hitch Harness Repair Procedure -Trailer Tow Hitch Harness Safety Recall 5723B 1. Locate the right drain plug in back of the spare tire and remove. 2. Install 4 pin or 7 pin harness connectors. a. Figure 3. Attach 4 pin harness with attachment plate included in main towbar kit with supplied bolts and nuts. b. Figure 4. Plug harness connector into back of connector of 7 pin connector. Page 9 of 14 Figure 3 Figure 4 Repair Procedure -Trailer Tow Hitch Harness Safety Recall 5723B 7 PIN 3. Route harness back towards rear of car between main hitch body and bumper support bracket. 4. Bring harness up and over main bar and back over rear of tow bar. Page 10 of 14 HARNESS MAIN HITCH BODY Repair Procedure -Trailer Tow Hitch Harness Safety Recall 5723B 5. Locate the female connector for the new harness. Insert the mazda.oemdtc.com/product/k-B0002BEWZQ/US/mazdaoemdtc-20">harness up through drain hole and push grommet attached to new harness through hole. 6. ( Critical step) Position harness along existing harness along back of sheet metal. Ensure grommet is fully seated (Good Condition). Page 11 of 14 ⑦ GOOD NO GOOD Repair Procedure – Trailer Tow Hitch Harness Safety Recall 5723B —IN’TERIOR OF VEHICLE — UPPER GROMMET LIP X / BODY SHEET METAL – ……. ~ —-{! ,… ……. -.J….~ };::;;:::::=::;;~tr— LOWEil GROMMET LIP — EXTERIOROFIIEHK:LE– 7. Plug exterior llarness female connector into interior male llarness connector. 8. Using lhe 5 supplied t.ip ties rrom the repair kil ;11.1.ach lo the lociltions hit:;hli~hl.ed with red ,mows in I igures Sand 6. I )o not overtightc11 the tics. Make sure the hitch harness connector is securely fastened in rigure 5 ( blue arrow ~nd squ ~re). Page 12 of 14 Figure 5 Figure 6 Harness connector GOOD NO GOOD Repair Procedure -Trailer Tow Hitch Harness Safety Recall 5723B 9. Double check grommet from step 6 is seated properly (Good condition) and did not become loose when zip tying the harness. If loose, ensure the grommet is seated properly by viewing underside of grommet and checking if lip is fully seated around perimeter of hole (see illustration, step 6) — INTERIOR OF VEHICLE — UPPER GROMMET LIP X BODY SHEET METAL LOWER GROMMET LIP — EXTERIOR OF VEHICLE — 10. Reconnect the negative battery cable to the vehicle. 11. Perform a tow hitch harness functionality test. NOTE: The test is to check wiring connector pin outs with a standard 12V Test Light. If your Mazda dealer has a current dealer-owned 4 or 7-pin Tester (similar to the item on Amazon listed here) which can be used also – but is not required to be purchased to perform this recall. a. Standard Test Light: With the vehicle running, test the following connections in the figure below to make sure they are working. Test each item in the 7-pin and 4-pin connector for Page 13 of 14 Repair Procedure -Trailer Tow Hitch Harness Safety Recall 5723B voltage or test to ground as required. i. Perform check of the brake lights. ii. Perform check of the backup lights (not needed with 4-pin). iii. Perform check of right and left turn signals. Truck < view looking into connecto, ) TIii / l_.lt UlhtS I T111 / St1• UIIIIS … ,.u,ins Trailer Brllles Left tun / brakes Venow .,. …. R,ght turn / brakes Green l T111 / – lJIIIIS T&llights Brown GrolMld WMe b. Using a 4 or 7-pin trailer harness tester: i. Plug testing unit into harness, turn car on and put the vehicle into tow mode. ii. Perform check of the brake lights. iii. Perform check of the backup lights (not needed with 4-pin). iv. Perform check of right and left turn signals. If checks are No Good, look for loose connections in the trailer hitch harness connector or 4 or 7-pin connectors then go back and perform step 11 again. When all checks are complete, then move to step 12. 12. If trailer harness functions properly, reinstall the interior trunk board, interior trunk foam and replace any customer personal items into the trunk area . Reinitialize windows and any other electrical items impacted by battery disconnection. C. CAMPAIGN LABEL INSTALLATION a. Fill out a Black “Campaign Label” (9999-95-0SSA-06) with Campaign No: “5723B”, your dealer code, today’s date. EL CAMP JGN NO:~—- DEAI..ER COE:. ___ _ II Page 14 of 14 b. Affix it to the hood as shown: __… Repair Procedure -Trailer Tow Hitch Harness Safety Recall 5723B END OF REPAIR PROCEDURE

SEOCONTENT-END