A20-117

Service Bulletin
20-117
December 9, 2020
Version 1
Warranty Extension: 2016-17 Pilot and 2017 Ridgeline Keyless Start
System Error with DTC B12C5
AFFECTED VEHICLES
Year
Model
Trim Level
VIN Range
2016-17
Pilot
ALL
Check the iN VIN status for eligibility.
2017
Ridgeline
ALL
Check the iN VIN status for eligibility.
BACKGROUND
The vehicle may not start upon first press of the ENGINE START/STOP button. Also, MID displays the error message
KEYLESS START SYSTEM ERROR, and DTC B12C5 (Engine Start/Stop Switch Failure) is stored.
American Honda is extending the warranty for the keyless start system on these vehicles to 9 years from the original date
of purchase or 125,000 miles, whichever comes first.
CUSTOMER NOTIFCATION
Owners of affected vehicles will be sent a notification of this warranty extension.
Do an iN VIN status inquiry to make sure the vehicle is shown as eligible.
CORRECTIVE ACTION
Replace the ENGINE START/STOP switch.
PARTS INFORMATION
Part Name
Part Number
Quantity
Engine Start/Stop Switch Assembly
35881-TG7-A04
1
WARRANTY CLAIM INFORMATION
Operation
Number
Description
Flat Rate
Time
Defect
Code
Symptom
Code
Template
ID
Failed Part Number
7251C1
Replace the ENGINE
START/STOP
SWITCH. (Includes
clearing DTCs.)
0.3 hr.
6S100
Y9300
A20117A
35881-TG7-A01
Skill Level: Repair Technician
CUSTOMER INFORMATION: The information in this bulletin is intended for use only by skilled technicians who have the proper tools, equipment,
and training to correctly and safely maintain your vehicle. These procedures should not be attempted by “do-it-yourselfers,” and you should not
assume this bulletin applies to your vehicle, or that your vehicle has the condition described. To determine whether this information applies, contact
an authorized Honda automobile dealer.
© 2020 American Honda Motor Co., Inc. – All Rights Reserved
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REPAIR PROCEDURE
1. Remove the passenger’s dashboard side cover.
2. Remove the passenger’s dashboard trim panel.
NOTE
Handle this panel carefully. It is thin and can be brittle, especially in cold temperatures.
3. Remove the dashboard center panel, and then disconnect the connector.
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4. Carefully pull back the right side of the driver’s dashboard lower cover to expose the screws for the dashboard center
middle trim.
NOTE
Disconnect the humidity/in-car temperature sensor.
5. Remove the screws holding in the dashboard center middle trim, then remove it.
6. Disconnect all harness connectors.
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7. Remove the ENGINE START/STOP switch assembly from the dashboard center middle trim.
8. Install the new ENGINE START/STOP switch assembly.
9. Reinstall all removed parts in the reverse order of removal.
10. Clear all DTCs using the i-HDS.
11. Confirm that the ENGINE START/STOP switch works.
END
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