# Service bulletin A20\-104

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.

- Type: Service bulletin
- NHTSA id: 10184308
- Published by NHTSA: 2020\-12\-19
- Manufacturer's number: A20\-104
- Manufacturer's date: 2020\-12\-11
- NHTSA component: ELECTRICAL SYSTEM

## NHTSA's summary

Service Bulletin \- The Bluetooth HandsFreeLink \(HFL\) system freezes after a phone call and stored voice tags are missing when the ignition is turned ON.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10184308-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10184308-9999.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Electrical system

## Vehicles listed

- 2019 HONDA RIDGELINE

## Other bulletins for the same vehicles and component

- [ATI\&03262026905](/bulletins/11030674.md), 2026-04-03, Other: ELECTRICAL SYSTEM. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2017\-2019 Ridgelines with a customer complaint of the rearview camera inoperable. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
- [ATI\&03112026902](/bulletins/11030074.md), 2026-03-16, Other: ELECTRICAL SYSTEM. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2017\-2019 Ridgelines with a customer complaint of the rearview camera inoperable. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
- [ATI\&02242026902](/bulletins/11029281.md), 2026-03-03, Other: ELECTRICAL SYSTEM. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2017\-2019 Ridgelines with a customer complaint of the rearview camera inoperable. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
- [ATI\&01052026901](/bulletins/11027802.md), 2026-01-27, Other: ELECTRICAL SYSTEM. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2017\-2019 Ridgelines with a customer complaint of the rearview camera inoperable. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
- [ATI\&10232025902](/bulletins/11024908.md), 2025-11-04, Other: ELECTRICAL SYSTEM. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2017\-2019 Ridgelines with a customer complaint of the rearview camera inoperable. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
- [ATI\&10142025904](/bulletins/11024886.md), 2025-11-04, Other: ELECTRICAL SYSTEM. Dealer Message \- American Honda Motor Co., Inc. \(AHM\) is searching for certain 2017\-2019 Ridgelines with a customer complaint of the rearview camera inoperable. To better understand the cause of this condition, AHM would like to inspect the vehicle prior to you attempting a repair of any kind.
- [A21\-055](/bulletins/10226108.md), 2022-11-08, Service bulletin: ELECTRICAL SYSTEM. Service Bulletin \- REVISION SUMMARY Under PARTS INFORMATION, the trim level was corrected. SYMPTOM The vehicle’s factory security system will sound off intermittently when the vehicle is parked, and the system is armed.
- [A21\-010](/bulletins/10187008.md), 2021-02-18, Service bulletin: EQUIPMENT; ELECTRICAL SYSTEM:SOFTWARE; POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE \(TCM/PCM/TECM\); ENGINE AND ENGINE COOLING. "Service Bulletin \- The PCM software may misinterpret sensor inputs as a deteriorated catalytic converter. Additionally, debris from the high pressure pump or the fuel injector machining process can cause internal wear or clogging inside one or more injectors. One or more of the following DTCs may be stored: \- P0420 \(rear bank catalyst system efficiency below threshold \[bank 1\]\) \- P0430 \(front bank catalyst system efficiency below threshold \[bank 2\]\) \- P0300\-P0306 \(misfire\) \- P219A \(air\-fuel ratio variation of cylinder \[bank 1, rear bank\]\) \- P219B \(air\-fuel ratio variation of cylinder \[bank 2, front bank\]\) American Honda is extending the warranty on these repairs to 10 years from the original date of purchase or 150,000 miles, whichever comes first."
- [ATS190101](/bulletins/10152764.md), 2019-02-10, Service bulletin: ELECTRICAL SYSTEM:IGNITION; POWER TRAIN. Tech line summary article \- We're getting reports of vehicles being stuck in ACCESSORY mode and unable to fully shut down. When this happens, the audio unit stays on, the ENGINE START/STOP button blinks, the gear position indicator doesn't show P, and the doors won't lock.

JSON: [/v1/bulletins/10184308](/v1/bulletins/10184308)

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