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NHTSA ID Number: 11028523

Manufacturer Communication Number: ONL6AX01302026

TSB/Document Date: 2026-02-06


Summary

Owner Notification Letter - Under certain circumstances, after coming to a stop and the idle stop feature engaging, the vehicle may not automatically restart. AcuraeBay logo is providing a product update with a new PGM-FI software update to fix this issue.


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® ACURAeBay logo eat
AUTOMOBILE DIVISION
American HondaeBay logo Motor Co. Inc 99999999
1919 Torrance Blvd, P.O, Box 2215
Torrance, CA 905099870

This notice applies to a vehicle registered in your name:
XXXXIXXXXXXKXAXKXXXXXXK
VIN: XXXXXXXXXXXXXXXXX
January 2026
Product Update: 2016-2020 MDX PGN-FI Idle Stop Software Update and
Warranty Extension: Engine Does Not Auto Restart After Entering Auto Idle Stop
Dear FIRSTNAME LASTNAME:
What is the reason for this notice?
Under certain circumstances, after coming to a stop and the idle stop feature engaging, the vehicle may not
automatically restart. AcuraeBay logo is providing a product update with a new PGM-FI software update to fix this
issue.
In addition, to ensure your confidence in your vehicle, AcuraeBay logo is extending the warranty coverage for valve
adjustment and starter replacement related to this condition to 10 years from the original date of purchase
with no mileage limitation. This warranty extension provides coverage for the original owner and any
subsequent owners. After completing the product update PGM-FI idle stop software update, no further action
is required on your part unless you experience a problem.
What will AcuraeBay logo do?
AcuraeBay logo will update the PGM-FI software for free. Please call any authorized AcuraeBay logo dealer and make an
appointment to have your PGM-FI software updated for FREE. Once you make an appointment for your
vehicle, be advised that the PGM-FI software update process may take approximately 15 minutes.
After completing the software update and if you experience a problem related to this condition, AcuraeBay logo will
replace the starter assembly, starter relays, and adjust the valves for FREE. Once you make an
appointment for your vehicle, be advised that the repair may take approximately 3 hours. However, your
dealer can provide you with a better estimate of the overall time for this service visit, as it may be necessary
to make your vehicle available for a longer period of time. If you are not the only driver of this vehicle, please
advise all other drivers and passengers of this important information.
If you previously paid to have your starter assembly and starter relays replaced due to this condition, you
may be eligible for reimbursement, even if you no longer own the vehicle. Refer to the attached
reimbursement instructions for eligibility requirements and the reimbursement procedure.
California Owners Only:
The DMV will not renew your registration until the product update software repair has been completed. After
completing the repair procedure, your dealer will give you a Vehicle Emission Recall - Proof of Correction
certificate. Please make sure your dealer completes and gives you the certificate. Keep the certificate for
your records as proof that the repair was completed. The warranty extension repair, if needed, will have no
impact on your vehicle registration. Submit the certificate to the DMV only if they request it.
Lessor information
Please forward a copy of this notice to the lessee.
What to do if you feel this notice is in error
Our records show that you are the current registered owner of a 2016-2020 MDX involved in this product
update and warranty extension. If this is not the case, or the name/address information is incorrect, please fill
out and return the enclosed postage-paid Information Change Card. We will then update our records.
If you have questions
If you have any questions about this notice, or need assistance with locating an AcuraeBay logo dealer,
please call American HondaeBay logo’s Customer Support & Campaign Center at 1-888-234-2138. You
can also visit AskUs.acura.com to use our 24/7 virtual agent, or locate a dealer online at
Owners.acura.com. If you are a client in a U.S territory, please contact your local
distributor/dealer.
We apologize for any inconvenience this campaign may cause you.
Sincerely,
American HondaeBay logo Motor Co., Inc.
NOTICE: If this is a leased vehicle, please forward this notice to the lessee.
FOR DEALER USE ONLY:
Product Update - Service Bulletin #23-001 /Defect #6AX /Symptom #UCR
Warranty Extension - Service Bulletin #23-002 / Defect #6T6 /Symptom #HCS

*
A ACURAeBay logo
DIVISION AUTOMOTRIZ Esta notificacion aplica a un vehiculo registrado a su nombre:
Tonanee C8 90800.9670 XXXXXXXXXXXXXXX XXX
VIN: XXXXXXXXXXXXXXXXX
enero de 2026
Actualizacion de producto: Actualizacién del programa de PGM-FI para el modo de parada en
ralenti del MDX 2016-2020 y
Extension de garantia: El motor no arranca automaticamente después de ingresar al modo de
parada en ralenti automatica
Estimado/a FIRSTNAME LASTNAME:
éCual es el motivo de esta notificacion?
Bajo ciertas circunstancias, después de detenerse y que la funcion de parada en ralenti se activa, el
vehiculo puede que no arranque automaticamente. AcuraeBay logo esta proporcionando una actualizacion de
producto con una nueva actualizacion del programa del PGM-FI para corregir este problema.
Ademas, para garantizar la confianza en su vehiculo, AcuraeBay logo esta extendiendo la cobertura de la garantia
para el ajuste de las valvulas y el reemplazo del motor de arranque relacionado con esta condicién a 10
afios a partir de la fecha original de compra, sin limite de millas. Esta extension de garantia brinda
cobertura al propietario original y a cualquier propietario subsiguiente. Después de completar la
actualizacion del programa de la funcién de parada en ralenti de PGM-FI, no se requiere ninguna accion
de su parte a menos que usted experimente algun problema.
é Qué hara AcuraeBay logo?
AcuraeBay logo actualizara el programa de PGM-FI de forma gratuita. Por favor llame a cualquier concesionario
autorizado AcuraeBay logo y haga una cita para la actualizacion del programa de PGM-FI de forma GRATUITA.
Una vez que programe una cita para su vehiculo, le avisamos que el proceso para actualizar el programa
de PGM-FI podria tardar aproximadamente 15 minutos.
Después de completar la actualizacion del programa y si su vehiculo experimenta un problema
relacionado con esta condicién, AcuraeBay logo reemplazara el conjunto del motor de arranque, los relés del motor
de arranque y el ajuste de las valvulas de forma GRATUITA. Una vez que programe una cita para su
vehiculo, le avisamos que la reparaci6én podria tardar aproximadamente 3 horas. No obstante, su
concesionario le puede ofrecer un mejor estimado del tiempo total de esta visita de servicio, ya que
pudiera ser necesario que su vehiculo esté disponible por un periodo mas largo. Si usted no es el unico
conductor de este vehiculo, por favor informe a todos los conductores y pasajeros sobre esta informacion
importante.
Si usted anteriormente ha pagado por el reemplazo del conjunto del motor de arranque y los relés del
motor de arranque debido a esta condicién, usted puede calificar para un rembolso, aunque ya no sea el
propietario del vehiculo. Consulte las instrucciones para reembolso que se encuentra anexa para ver los
requisitos de elegibilidad y el procedimiento de reembolso.
Solamente propietarios en California:
El DMV no renovara su registro hasta que la reparacion del programa de esta actualizacién de producto
haya sido completada. Después de completar este procedimiento de reparacion, su concesionario le
entregara un certificado de Prueba de Correccién — Campajia de seguridad de emisiones del vehiculo
(Vehicle Emissions Recall - Proof of Correction). Por favor asegurese que su concesionario complete y le
entregue el certificado. Mantenga el certificado para sus registros como prueba que la reparaci6n fue
completada. La reparacién de la extension de garantia, si es necesaria, no tendra impacto en el registro
del vehiculo. Envie el certificado para el DMV solamente si ellos lo solicitan.
Informacion para el arrendador
Por favor envié una copia de esta notificacion al arrendatario.
Qué debe hacer si considera que esta notificacion es erroénea
Nuestros registros muestran que usted es el propietario actual registrado de un vehiculo MDX 2016-2020
el cual forma parte de esta actualizacion de producto y extensién de garantia. Si no es el caso, o sila
informacion de nombre/direccion esta incorrecta, por favor llene y devuelva la Tarjeta de Cambio de
Informacion anexa pre-pagada. Con esto actualizaremos nuestros registros.
Si tiene preguntas
Si tiene alguna pregunta acerca de esta notificaci6n o si necesita ayuda para ubicar a un concesionario
AcuraeBay logo, por favor comuniquese con el Centro de Apoyo al Cliente y Campafias de American HondaeBay logo al 1-
888-234-2138. Usted también puede visitar AskUs.acura.com para usar nuestro agente virtual las 24
horas/los 7 dias de la semana, o puede ubicar un concesionario en linea en Owners.acura.com. Si usted
es un cliente en un territorio de Estados Unidos, por favor comuniquese con su
distribuidor/concesionario.
Le pedimos disculpas por cualquier inconveniente que esta campafia pudiera causarle.
Atentamente,
American HondaeBay logo Motor Co., Inc.
AVISO: Si este es un vehiculo arrendado, por favor envié esta notificacion al arrendatario.
PARA USO DEL CONCESIONARIO SOLAMENTE:
Actualizacion de producto - Boletin de Servicio #23-001 /Defecto #6AX / Sintoma # UCR
Extension de garantia - Boletin de Servicio #23-002 / Defecto #6T6 /Sintoma #HCS.

1

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TSB/Document ID: ONL6AX01302026

Replacement Service Bulletin Number:

MFR Communication Date: 2026-01-31

MFR Internal Campaign ID/Software Version:

Communication Type: Other

NHTSA Components: FUEL/PROPULSION SYSTEM

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