Service bulletin NTB20-004a

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10177214
Published by NHTSA	2020-07-10
Manufacturer's number	NTB20-004a
Manufacturer's date	2020-06-29
NHTSA component	ENGINE; EQUIPMENT

NHTSA's summary

2020 SENTRA; REMOTE ENGINE START This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Equipment and accessories

Vehicles listed
NISSAN SENTRA	2020

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
NTB25-005	2025-01-30. Service bulletin. SERVICE INFORMATION If one of the APPLIED VEHICLES has DTC P2100 for “ETC MOT PWR-B1” or P2101 for “ETC FNCTN/CIRC-B1” stored in the Engine Control Module (ECM) with a customer complaint of loss of power, • Perform the revised Electronic Service Manual (ESM) procedure noted on page 2 for "PERFORM DTC CONFIRMATION PROCEDURE." HINT: This revised procedure will be added to the ESM in a future update.
NTB24-045	2024-09-10. Service bulletin. ENGINE SUPPORT TOOLS APPLIED VEHICLES: 2020-2024 Sentra (B18) SERVICE INFORMATION A new Engine Support Bracket is now available to allow the CVT to be removed from the APPLIED VEHICLES without having to remove the engine. The procedure in this bulletin is different from the procedure currently in the ESM, which will be updated with this information at a later date. Please refer to the SERVICE PROCEDURE in this bulletin for information on how to use these new tools.
NTB23-018G	2024-03-08. Service bulletin. SOFTWARE UPDATE FOR INFOTAINMENT ISSUES This bulletin is no longer active. To access infotainment software updates via the Infotainment Software Update Utility: Select SPECIALTY TOOLS, and then select Infotainment Software Updates on the left side of ASIST. Please discard previous versions of NTB23-018.
NTB23-018F	2024-02-08. Service bulletin. SOFTWARE UPDATE FOR INFOTAINMENT ISSUES This bulletin is no longer active. To access infotainment software updates via the Infotainment Software Update Utility: Select SPECIALTY TOOLS, and then select Infotainment Software Updates on the left side of ASIST. HINT: Initially, the Infotainment Software Update Utility will be available only on the CONSULT PC version of ASIST. The Utility will be added to ASIST WEB at a later date. Please discard previous versions of NTB23-018.
NTB23-018E	2023-09-09. Service bulletin. SOFTWARE UPDATE FOR INFOTAINMENT ISSUES This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB23-018D	2023-09-09. Service bulletin. SOFTWARE UPDATE FOR INFOTAINMENT ISSUES This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB23-018C	2023-05-06. Service bulletin. SOFTWARE UPDATE FOR INFOTAINMENT ISSUES This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB23-018B	2023-04-10. Service bulletin. SOFTWARE UPDATE FOR INFOTAINMENT ISSUES This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB23-018A	2023-04-10. Service bulletin. SOFTWARE UPDATE FOR INFOTAINMENT ISSUES This bulletin has been amended. See AMENDMENT HISTORY on the last page. Please discard previous versions of this bulletin.
NTB23-018	2023-04-10. Service bulletin. SOFTWARE UPDATE FOR INFOTAINMENT ISSUES SERVICE INFORMATION When diagnosing an infotainment issue or after replacement of the AV Control Unit, it is necessary to verify the current software version of the AV Control Unit to determine if a software version update is required. Use the vehicle tables in this bulletin to determine the current software version, if the AV Control Unit requires a software version update, and which procedure to use to update the AV Control Unit. The software updates in this bulletin are to address stability improvements and “bug” fixes. IMPORTANT: If the customer is experiencing a software related concern, refer to NTB21-038 to verify if the customer concern is a hardware or software related issue. If the concern is a software related issue, review the information in this bulletin to update the AV Control Unit as needed.