R23C6 – Loss of Drive Power from Inverter Software Error – 2023 Nissan Ariya

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~ NISSAN “–…/ September 28, 2023 Dr. Cem Hatipoglu Acting Associate Administrator for Enforcement National Highway Traffic Safety Administration Attn: Recall Management Division (NVS-215) Room W48-302 1200 New Jersey Avenue, SE Washington, D.C. 20590 Dear Dr. Hatipoglu: Nissan North America, Inc. One Nissan Way Franklin, TN 37067 Mailing Address: PO Box 685001 Franklin, TN 37068 We are transmitting the enclosed Defect Information Report in accordance with 49 CFR Part 573. A voluntary recall campaign will be initiated and your office provided with the notices. Very truly, Will Swindell Manager, Technical Compliance Encl. DEFECT INFORMATION REPORT 1. Manufacturer: Nissan Motor Co., Ltd. Tochigi Plant 2. Vehicles Potentially Involved: Certain Model Year 2023 Nissan Ariya vehicles as shown in the table below: Model Dates of Manufacture Plant MY 2023 Nissan Ariya June 17, 2022 – May 19, 2023 Tochigi Based on Nissan production records, the issue (as described in Section 5 below) occurred on certain Model Year 2023 Ariya vehicles that were built with the subject component during the affected production period. This concern could potentially affect both 2WD and 4WD models. Due to the unique motor type utilized on the vehicle, this issue affects only Nissan Ariya. No other Nissan or INFINITI vehicles are affected. The name, description and part number of the subject components are below: Part Name Part Descri~tion Part Number Inverter – Power Electronics Box (PEB) Inverter 2WD 291A0 5MP3G Inverter – Power Electronics Box (PEB) Inverter FR 4WD 291A0 SMPSG Inverter – Power Electronics Box (PEB) Inverter RR 4WD 291A0 5MP7G 3. Total Number of Vehicles Potentially Involved: Approximately 9,813 MY 2023 Nissan Ariya vehicles total. Model Volume of Production MY 2023 Nissan Ariya 9,813 4. Percentage of Vehicles Estimated to Actually Contain the Defect: Approximately 100%. 5. Description of the Defect: On affected Ariya vehicles, there is a potential that conductive fibrous shavings from the drive motors’ slip ring assembly can momentarily short circuit the two slip rings. If this occurs, the fibrous shavings are instantaneously burnt out resulting in no damage to any components. However, due to the fail-safe protocols, when the inverter detects a momentary over-current due to the short circuit, it cuts the motor torque to protect internal components of the controller, resulting in a loss of drive and “EV System Off’ message displayed on the dashboard to alert the driver. If this issue occurs, the torque to the driven wheels will be cut off until the fail-safe mode is released following a vehicle power off and restart. An unexpected loss of motive power while driving at high speed may increase the risk of a crash. 6. Chronology of Principal Events: January 2022 – During a production trial, an Ariya vehicle’s electric motor appeared to shut off immediately after the vehicle started to move at low speed. The Diagnostic Trouble Code (DTC) indicated a short circuit had occurred inside the motor, but no damage was observed to any of the motor or components. Nissan investigated the cause of the condition. February 2022 through April 2022 – Nissan inspected other Ariya vehicle motors and inventory parts and discovered conductive fibrous shavings on the slip ring end in the motor, apparently leftover from motor manufacturing. It was determined that the shavings could cause a momentary short circuit which initiated inverter fail-safe mode. Nissan implemented visual inspection for shavings in the slip ring assembly. Late December 2022 – Nissan received a report of an Ariya in China with motor shut off at low speed and “EV system error” message displayed, which had been produced after the April 2022 inspection countermeasure. January 2023 through April 2023 – Nissan found that conductive fibers can be generated during usage from the slip ring in the motor. In rare cases, it may lead to the momentary short circuit between the electrodes. Because the short circuit was momentary and did not damage the internal components and the vehicle could be restarted, Nissan did not judge this condition as abnormal. However, as a precaution, Nissan implemented improved inverter fail-safe control logic into production in April 2023. May 2023 through August 2023 – Nissan received two additional (2) foreign technical reports alleging electric motor shut off at vehicle start up or immediately upon backing out of a parking space while at low speed. September 2023 – Nissan received a report of an incident in a foreign market, indicating that an Ariya vehicle went into fail-safe mode and shut off the electric motor while driving at a higher speed. September 21, 2023 – Out of abundance of caution, Nissan decided to conduct a Voluntary Safety Recall to update the inverter/motor controller software to improve fail-safe protocols. Nissan is not aware of any accident or injuries related to the subject condition. 7. Description of Corrective Action: Dealers will be notified of the recall beginning September 29, 2023. Beginning on October 20, 2023, owners of all potentially affected vehicles will be notified to bring their Ariya to a Nissan dealer for repair. Dealers will be instructed to reprogram the inverter to improve fail-safe protocols. All repairs will be performed free of charge for parts and labor and may take less than one (1) hour to complete. Nissan will not include a statement in the Part 577 owner notification concerning reimbursement for the cost of obtaining a pre-notification remedy since the subject vehicles are under warranty. 8. Copy of Notices: Copies of all notices will be provided to NHTSA as they become available.

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CAMPAIGN BULLETIN Inverter Reprogram Voluntary Recall Campaign Reference: R23C6 Date: September 29, 2023 Attention: Dealer Principal, Sales, Service & Parts Managers SAFETY RECALL CAMPAIGN ID: R23C6 | Original Document Page 1 of 4 ***** Campaign Summary ***** Nissan has notified the National Highway Traffic Safety Administration (NHTSA) that it is issuing a Voluntary Safety Recall Campaign to reprogram the inverter on certain 2023 Nissan ARIYA vehicles identified in Service Comm and DBS National Service History. On affected vehicles, there is a potential that conductive fibrous shavings from the drive motors’ slip ring assembly can momentarily short circuit the two slip rings. If this occurs, the fibrous shavings are instantaneously burnt out resulting in no damage to any components. However, due to the fail-safe protocols, when the inverter detects a momentary over-current due to the short circuit, it cuts the motor torque to protect internal components of the controller, resulting in a loss of drive and “EV System Off” message displayed on the dashboard to alert the driver. If this issue occurs, the torque to the driven wheels will be cut off until the fail-safe mode is released following a vehicle power off and restart. An unexpected loss of motive power while driving at high speed may increase the risk of a crash Dealers will reprogram the inverter with updated software to improve failsafe protocols. For AWD (all- wheel drive) vehicles, both front and rear inverters will need to be reprogrammed. ***** What Dealers Should Do**** 1. Verify if vehicles are affected by this Voluntary Recall using Service Comm or DBS National Service history – Open Campaign I.D. R23C6 2. Dealers must not sell, lease, trade, rent or loan any vehicles in dealer inventory subject to this recall campaign until after the vehicle has been remedied. 3. If a retailed vehicle affected by this Campaign ID visits the dealer for service, the dealer should inform the customer about the recall and communicate that the software update is available. 4. Once repaired, dealers should submit the claim using the claims coding provided, and release the vehicle. IMPORTANT: It is a violation of Federal law for dealers to sell or deliver new vehicles in their inventory covered by this notification until the campaign’s remedy action is performed.): Affected Models/Years: Affected Population: Dealer Inventory: SERVICE COMM Activation date: Stop Sale In Effect MY2023 ARIYA (FE0) 9,813 2,800 September 29, 2023 YES CAMPAIGN ID: R23C6 | Original Document Page 2 of 4 ***** Release Schedule ***** Parts The remedy involves reprogramming by CONSULT IV. No parts are required. Special Tools • CONSULT IV Repair • NTB23-074 Owner Notification Nissan will notify the owners of potentially affected vehicles beginning October 2023. ***** Dealer Responsibility ***** It is the dealer’s responsibility to check Service Comm or DBS National Service History using the appropriate Campaign I.D. for the campaign status on each vehicle falling within the range of this voluntary recall campaign, which for any reason enters the service department. This includes vehicles purchased from private parties or presented by transient (tourist) owners and vehicles in new vehicle inventory. If a VIN subject to this recall campaign was part of a dealer trade, the letter associated with that VIN should be forwarded to the appropriate dealer for service completion. NISSAN NORTH AMERICA, INC. Total Customer Satisfaction Q. Is this a recall? A. Yes. Q. Is this a Stop Sale? A. Yes. Q. What is the reason for the recall? A. On affected vehicles, there is a potential that conductive fibrous shavings from the drive motors’ slip ring assembly can momentarily short circuit the two slip rings. If this occurs, the fibrous shavings are instantaneously burnt out resulting in no damage to any components. However, due to the fail-safe protocols, when the inverter detects a momentary over-current due to the short circuit, it cuts the motor torque to protect internal components of the controller, resulting in a loss of drive and “EV System Off” message displayed on the dashboard to alert the driver. Frequently Asked Questions (FAQ): CAMPAIGN ID: R23C6 | Original Document Page 3 of 4 Q. What is the possible effect of the condition? A. If this issue occurs, the torque to the driven wheels will be cut off until the fail-safe mode is released following a vehicle power off and restart. An unexpected loss of motive power while driving at high speed may increase the risk of a crash Q. What will be the corrective action for this voluntary recall campaign? A. Your Nissan dealer will reprogram the inverter with updated software. On AWD equipped vehicles, both the front and rear inverters will need to be reprogrammed. Q. How long will the corrective action take? A. This service, which is conducted at no charge to you for parts and labor, could take up to one and a half (1.5) hours to complete. However, your Nissan dealer may require your vehicle for a longer period of time based upon their work schedule. Q. When will vehicle owners be notified? A. Nissan will begin sending notifications to affected owners beginning October 2023, via U.S. Mail. Q. Is my vehicle safe to drive? A. If your vehicle is subject to this campaign, you will receive an Owner Notification letter from Nissan, which will instruct owners to bring their vehicles to a Nissan dealer to have their vehicles remedied as soon as possible. Q. Is there anything owners can do to mitigate this condition? A. No. Q. Will a rental vehicle be provided while the dealer is servicing the vehicle? A. Please consult your dealer for alternate transportation availability while your vehicle is being serviced. If parts replacement is necessary, rental is available upon customer request while parts are on order. EXPENSE CODE DESCRIPTION AMOUNT 502 Rental Expense $156 (Max) CAMPAIGN ID: R23C6 | Original Document Page 4 of 4 Contact the Warranty claims call center 1-800-258-7008 Option 7, if additional expense is required. Please refer to the Goodwill Rental Guidelines in the APRM for detailed information regarding application of rental reimbursement including policy modifications outlined in WBP20-018. Q. Are parts readily available? A. The remedy involves reprogramming the inverter with updated software. On AWD equipped vehicles, both the front and rear inverters will need to be reprogrammed. No parts are required. Q. Is there any charge for this service? A. No. The remedy will be performed for the customer free of charge. Q. Will I have to take my vehicle back to the selling dealer to have the service performed? A. No, any authorized Nissan dealer is able to perform the recall campaign. Q. I have lost confidence in the vehicle. Will Nissan replace or repurchase the vehicle? A. The remedy will fully correct this condition. As the condition will be corrected, there is no basis for repurchasing or replacing your vehicle. Q. What model year vehicles are involved? A. Model year 2023 Nissan ARIYA AWD vehicles manufactured from March 2022 to May 19, 2023 and 2023 Nissan ARIYA 2WD vehicles manufactured from June 2022 to March 27, 2023. Q. Are you experiencing this condition on any other Nissan (or INFINITI) models? A. No. Revision History: Date Announcement Purpose September 29, 2023 Original Document New campaign announcement

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OMB Control No.: 2127-0004 Part 573 Safety Recall Report 23V-657 The information contained in this report was submitted pursuant to 49 CFR §573 Manufacturer Name : Nissan North America, Inc. Submission Date : SEP 28, 2023 NHTSA Recall No. : 23V-657 Manufacturer Recall No. : R23C6 Manufacturer Information : Manufacturer Name : Nissan North America, Inc. Address : P. O. BOX 685001 Franklin TN 37068-5009 Company phone : 800-647-7261 Population : Number of potentially involved : 9,813 Estimated percentage with defect : 100 % Vehicle Information : Vehicle 1 : 2023-2023 Nissan Ariya Vehicle Type : LIGHT VEHICLES Body Style : SUV Power Train : HYBRID ELECTRIC Descriptive Information : Based on Nissan production records, the issue occurred on certain Model Year 2023 Ariya vehicles that were built with the subject component during the affected production period. This concern could potentially affect both 2WD and 4WD models. Due to the unique motor type utilized on the vehicle, this issue affects only Nissan Ariya. No other Nissan or INFINITI vehicles are affected. Production Dates : JUN 17, 2022 – MAY 19, 2023 VIN Range 1 : Begin : NR End : NR Not sequential Description of Defect : Description of the Defect : On affected Ariya vehicles, there is a potential that conductive fibrous shavings from the drive motors’ slip ring assembly can momentarily short circuit the two slip rings. If this occurs, the fibrous shavings are instantaneously burnt out resulting in no damage to any components. However, due to the fail-safe protocols, when the inverter detects a momentary over-current due to the short circuit, it cuts the motor torque to protect internal components of the controller, resulting in a loss of drive and “EV System Off” message displayed on the dashboard to alert the driver. FMVSS 1 : NR FMVSS 2 : NR Description of the Safety Risk : If this issue occurs, the torque to the driven wheels will be cut off until the fail-safe mode is released following a vehicle power off and restart. An unexpected loss of motive power while driving at high speed may increase Part 573 Safety Recall Report 23V-657 Page 2 The information contained in this report was submitted pursuant to 49 CFR §573 the risk of a crash. Description of the Cause : NR Identification of Any Warning that can Occur : An error message “EV System Off” will be displayed on the dashboard to alert the driver. Involved Components : Component Name 1 : Inverter – Power Electronics Box (PEB) Component Description : Inverter 2WD Component Part Number : 291A0 5MP3G Component Name 2 : Inverter – Power Electronics Box (PEB) Component Description : Inverter FR 4WD Component Part Number : 291A0 5MP5G Component Name 3 : Inverter – Power Electronics Box (PEB) Component Description : Inverter RR 4WD Component Part Number : 291A0 5MP7G Supplier Identification : Component Manufacturer Name : Nissan Motor Company Address : NR Foreign States Country : Japan Chronology : See attached Part 573 report for Chronology of Defect Part 573 Safety Recall Report 23V-657 Page 3 The information contained in this report was submitted pursuant to 49 CFR §573 Description of Remedy : Description of Remedy Program : Dealers will be instructed to reprogram the inverter to improve fail-safe protocols. Nissan will not include a statement in the Part 577 owner notification concerning reimbursement for the cost of obtaining a pre-notification remedy since the subject vehicles are under warranty. How Remedy Component Differs from Recalled Component : NR Identify How/When Recall Condition was Corrected in Production : NR Recall Schedule : Description of Recall Schedule : Dealers will be notified of the recall beginning September 29, 2023. Beginning on October 20, 2023, owners of all potentially affected vehicles will be notified to bring their Ariya to a Nissan dealer for repair. Planned Dealer Notification Date : SEP 29, 2023 – NR Planned Owner Notification Date : OCT 20, 2023 – NR * NR – Not Reported

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