# Service bulletin ONL6TM02272020

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: 10171978
- Published by NHTSA: 2020\-03\-04
- Manufacturer's number: ONL6TM02272020
- Manufacturer's date: 2020\-02\-27
- NHTSA component: SERVICE BRAKES, HYDRAULIC

## NHTSA's summary

Owner Notification Letter \- On some Accord Hybrid models, the brake tandem motor cylinder may only operate in failsafe mode if saltwater \(in areas where road salt is used\) enters the brake tandem motor cylinder and corrodes its metal components. The saltwater is able to enter the motor due to small gaps in the motor cover that result from issues in the manufacturing process. If the brake tandem motor cylinder enters into failsafe mode, instrument panel indicators will come on to alert the driver and there will be an increase in brake pedal travel during braking.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2020/MC-10171978-0001.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2020/MC-10171978-9999.pdf)

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

## Components

Brakes

## Vehicles listed

- 2017 HONDA ACCORD HYBRID

## Other bulletins for the same vehicles and component

- [ONL6TM11302021](/bulletins/10203824.md), 2021-12-03, Service bulletin: SERVICE BRAKES, HYDRAULIC. Owner Notification Letter \- Our records indicate that a PRODUCT UPDATE has not been completed on this vehicle \(Vehicle Identification Number XXXXXXXXXXXXXXXXX\). On your 2017 Accord Hybrid, the brake tandem motor cylinder may only operate in failsafe mode if saltwater \(in areas where road salt is used\) enters the brake tandem motor cylinder and corrodes its metal components. The saltwater is able to enter the motor due to small gaps in the motor cover that result from issues in the manufacturing process. If the brake tandem motor cylinder enters into failsafe mode, instrument panel indicators will come on to alert the driver and there will be an increase in brake pedal travel during braking.
- [A20\-001](/bulletins/10171184.md), 2020-02-11, Service bulletin: SERVICE BRAKES, HYDRAULIC; SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:MASTER CYLINDER. Service Bulletin \- The brake tandem motor cylinder on certain vehicles may only operate in failsafe mode if saltwater \(in areas where road salt is used\) enters the brake tandem motor cylinder and corrodes its metal components. The saltwater is able to enter the motor due to small gaps in the motor cover that result from issues in the manufacturing process. If the brake tandem motor cylinder enters into failsafe mode, instrument panel indicators will come on to alert the driver and there will be an increase in brake pedal travel during braking.
- [ABOM01142020](/bulletins/10170611.md), 2020-01-23, Service bulletin: SERVICE BRAKES, HYDRAULIC. Dealer Message \- Today, American Honda is announcing a Product Update for certain 2017 Accord Hybrid vehicles due to improperly manufactured brake tandem motor cylinders \(TMOC\) that, under certain conditions, may cause the vehicle to operate in a failsafe mode. Do an iN VIN status inquiry to determine which units in your inventory are affected.
- [A20\-001](/bulletins/10170609.md), 2020-01-23, Service bulletin: SERVICE BRAKES, HYDRAULIC. Service Bulletin \- The brake tandem motor cylinder on certain vehicles may only operate in failsafe mode if saltwater \(in areas where road salt is used\) enters the brake tandem motor cylinder and corrodes its metal components. The saltwater is able to enter the motor due to small gaps in the motor cover that result from issues in the manufacturing process. If the brake tandem motor cylinder enters into failsafe mode, instrument panel indicators will come on to alert the driver and there will be an increase in brake pedal travel during braking.
- [A19100B](/bulletins/10166785.md), 2019-10-29, Service bulletin: SERVICE BRAKES, HYDRAULIC. ServiceNews Article \- Is the BRAKE and/or BRAKE SYSTEM indicator on with DTC P1E4D\-00 \(motor angle signal malfunction\)? Our initial investigation points to the motor assembly on the tandem motor cylinder.
- [A19100B](/bulletins/10166434.md), 2019-10-25, Service bulletin: SERVICE BRAKES, HYDRAULIC. ServiceNews Article \- Is the MIL on with DTC P1E4D\-00 \(motor angle signal malfunction\)? Our initial investigation points to the motor assembly on the tandem motor cylinder.
- [ATS171104](/bulletins/10125000.md), 2017-12-08, Service bulletin: SERVICE BRAKES. Tech line summary article \- We?re currently looking at an issue where the vehicle shudders or jerks and various indicators come on. What?s particularly noticeable is the CMBS indicator comes on with Collision Mitigation Braking System Problem. See Your Dealer. in the driver information interface.

JSON: [/v1/bulletins/10171978](/v1/bulletins/10171978)

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