NHTSA ID Number: 10189984
Manufacturer Communication Number: M1520
TSB/Document Date: 2021-04-06
Summary
SERVICE BULLETIN M1520: 2021 INITIAL CARE. PURPOSE: Revised. The purpose of this program is to monitor Harley-Davidson
quality delivered to the customers. Harley-Davidson
Technical Service is providing an initial care program for a number of 2021 vehicle components. Update: All Internal Combustion Engine (ICE) vehicles parts have been removed from the initial care program as of March 19, 2021. All Electric Vehicle (EV) parts will remain in the initial care program. Table 2, Initial Care Parts List. Duration of Program: January 4, 2021 through April 4, 2021.
M1520
2021-03-26
M1520: 2021 INITIAL CARE
to contact Technical Service regarding any concerns on the
mechanical clutch components for 2021 Touring vehicles.
Reason for Revision
Table 1. Document History
Date
2021-03-26
2021-03-05
2021-01-19
2021-01-04
Table 2. Initial Care Parts List
Revision Description
Updating vehicles in initial care
Updated Purpose for Service Bulletin, Part
*
Numbers : Table 2
Part number update
* Updated Part Numbers : Table 2
Part list update
* Updated Part Numbers
Added Duration of Program, Required
*
Dealer Action - Key Program Components
Initial release
Part No.
41000677
16101029
66000257
66000334
69202687
Description
Electronic Control Module (ECM)
Electric Vehicle Powertrain (EVPT)
Onboard Charger (OBC)
Rechargeable Energy Storage System (RESS)
Vehicle inlet assembly (Japan)
Required Dealer Action
US Market
Purpose for Service Bulletin
The purpose of this program is to monitor Harley-Davidson![]()
quality delivered to the customers. Harley-Davidson
Technical
Service is providing an initial care program for a number of
2021 vehicle components.
Harley-Davidson
is asking dealers to provide information on
the parts listed in Part Numbers to Technical Service within
24 h of a customer concern. The goal is to provide a rapid
resolution that enables Harley-Davidson
to have the customer
back on the road within 72 h.
Call 800-664-7762 for assistance and approval. This phone
line allows direct access for technical support, diagnostic
assistance and warranty pre-approval decisions. Select the
Initial Care prompt for the specific vehicle feature requiring
repair.
All Other Markets
Call the local Harley-Davidson
Technical Support representative
for assistance and approval.
Information Required
Update: All Internal Combustion Engine (ICE) vehicles parts
have been removed from the initial care program as of March
19, 2021. All Electric Vehicle (EV) parts will remain in the initial
care program.
NOTE
Emergency weekend or holiday repairs are completed only if
customer satisfaction is at stake. This will require contacting
the Technical Service Initial Care Team on the next business
day for review and authorization.
Duration of Program
Have the following information ready:
January 4, 2021 through April 4, 2021
• Vehicle Identification Number (VIN)
Motorcycles Affected
• Vehicle mileage
• Problem condition
2021 Vehicles
• Diagnostics procedures performed and test results.
Markets Affected
• Other pertinent information as in
All markets are affected.
• Vehicle maintenance
Part Numbers
• Repair history
NOTE
2021 Touring Clutch Components: These components are
not on the initial care list, but Harley-Davidson
is asking dealers
• Vehicle condition
• Detail of any modifications
NOTE
In the interest of preserving customer safety and satisfaction, always check for outstanding recalls whenever any motorcycle is brought into your dealership for either maintenance or service.
ROUTING
INITIAL HERE
SERVICE
MANAGER
SALES MANAGER PARTS MANAGER
WARRANTY
PROCESS
MANAGER
LEAD TECHNICIAN TECHNICIAN NO. 1 TECHNICIAN NO. 2 TECHNICIAN NO. 3 RETURN THIS TO
As Initial Care progresses, check this bulletin periodically for
updates.
Key Program Components
• Pre-authorization from the Technical Service Initial Care
Team is required for all warranty repairs of components listed
in Table 2. Decisions concerning repair versus replacement
or requests for further diagnostic labor time are determined
by Technical Service Representatives.
• Pre-authorization is required for all repairs on components
and systems listed in Table 2.
• If the failure is warrantable, an authorization number will be
provided and the part will be ordered by Technical Services.
During the initial care period, Technical Service may instruct
you to take unique steps to expedite component return for
failure analysis.
• When filing the warranty claim, enter the authorization
number in the authorization field of the claim.
Return Parts
Hold all claimed parts for 60 d from date of credit issued for
possible field inspection and/or request to return to factory.
After 60 d, destroy and discard the parts.
2/2
M1520
- Advanced VCI Box, Industry-leading J2534 Pass-Thru...
- High-Speed OEM-Level Diagnostics & Programming: Unlock true...
- Coverage for 17 Car Brands & Ultra Reliability: Works...
- User-Friendly RLink Platform & Expert Support: TOPDON’s...
- 6.6 ft USB-C Cable & Portable Storage Case: The RLink J...
Last update on 2026-06-23 / Affiliate links / Images from Amazon Product Advertising API
If the PDF is very large, it may not load in the preview below.
Some older TSBs had multiple PDFs — visit the NHTSA Website to view all PDFs.
If the TSB PDF does not show, download or view it on the NHTSA Website.
Click on the (+) Plus Sign
Then Click on Associated Document(s)
Search NHTSA Database for Recalls
Search NHTSA Database for Vehicle Investigations
View Latest Vehicle Investigations
Search NHTSA Database for Vehicle Complaints
View Latest Vehicle Complaints
TSB/Document ID: M1520
Replacement Service Bulletin Number:
MFR Communication Date: 2021-03-26
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: EQUIPMENT
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
- 2026 ALL-IN-ONE HEAVY DUTY TRUCK SCANNER – BUILT FOR DIESEL DIAGNOSTICS:The ANCEL X7HD PRO combines full-system diagnostics, bi-directional control, ECU coding, HDOBD/OBD2 functions, and 42+ reset services in one powerful heavy duty truck scanner. This diesel scan tool helps technicians, fleet owners, and repair shops diagnose problems faster, reduce downtime, and complete more repairs without switching between multiple truck diagnostic tools. Features a 10.1" Android tablet, Bluetooth & Wi-Fi, live data graphing, and 2 years of f-ree updates
- 42+ RESET FUNCTIONS – MORE THAN A BASIC TRUCK CODE READER:Perform essential service functions including forced DPF regeneration, injector coding, speed limiter adjustment, idle adjustment, oil reset, ABS reset, SRS reset, EPB reset, throttle reset, and suspension calibration. Designed for real truck maintenance and fleet service, this commercial truck diagnostic scanner helps reduce dealer visits, avoid unnecessary downtime, and handle more repair jobs with one diesel diagnostic tool
- ACTIVE TEST & ECU CODING – ADVANCED BIDIRECTIONAL SCAN TOOL FOR TRUCKS:Quickly locate faults by activating components and sending commands directly to vehicle systems. Test injectors, ABS, throttle, cooling systems, and other modules in real time without unnecessary disassembly. ECU coding and module matching help adapt replacement parts, restore factory settings, and reduce repeat repairs, making this semi truck scan tool ideal for advanced troubleshooting and daily shop work
- FULL-SYSTEM HDOBD/OBD2 DIAGNOSTICS – WIDE TRUCK & ENGINE COVERAGE:Read and clear codes, monitor live data, freeze frame, and diagnose engine, transmission, ABS, body, and other major systems. Compatible with Freightliner
, Kenworth
, Peterbilt
, Volvo
, Mack
, International
, and other commercial truck brands, plus Cummins
, Caterpillar
, Detroit, Paccar
, and Navistar
diesel engines. Also supports full OBD2/EOBD diagnostics for standard vehicles, making it a versatile truck obd2 scanner for mixed fleets and repair shops - PROFESSIONAL HARDWARE + RELIABLE SUPPORT – BUILT FOR DAILY SHOP USE:This professional diesel diagnostic computer features a 10.1" touchscreen, Android 10.0 system, 6000mAh battery, Bluetooth/Wi-Fi connectivity, and built-in front & rear cameras for documenting repairs and remote troubleshooting. Includes 2 years of fr-ee updates, 1-year w-arranty, and responsive technical support. Contact [email protected] before purchase to confirm compatibility and supported functions for your truck or diesel engine
- 【Built for Heavy Duty Diesel Diagnostics】Designed for SAE J1939 and J1708 compliant trucks, buses, and diesel-powered commercial vehicles. HD601 truck scanner diagnostic tool helps owner-operators, small fleets, mobile technicians, and independent repair shops quickly identify fault codes, view live data, and make informed repair decisions—saving time, reducing downtime, and avoiding unnecessary shop visits
- 【Full System Diagnostics+All HD OBD Modes】The New HD601 heavy duty truck scanner delivers full-system diagnostics on SAE J1939 and J1708-compliant commercial vehicles—digging into engine, transmission, ABS, fuel, every system that keeps your rig rolling. It supports all HD OBD modes, giving you live data, freeze frame, ECU info, vehicle info, emissions data tracking, plus code reading and clearing. Not just what broke, but why—so you fix it right the first time. Pinpoint issues faster, cut repair costs, and spend less time on the shoulder
- 【Wide Heavy-Duty Vehicle Coverage】Supports a wide range of heavy-duty vehicle manufacturers and systems, including Freightliner
, Kenworth
, Peterbilt
, Volvo
, International
, Detroit, Cummins
, Paccar
, Allison, Eaton
, Bendix
, Wabco, and more. Coverage varies by vehicle make, model, year, and system configuration. Contact our support team before purchase if compatibility verification is needed - 【Speaks Major Truck Protocol】The New HD601 diesel truck scanner is built for American-made trucks—and supports the heavy‑duty protocols you' re most likely to run into on the road: SAE J1939, J1708/J1587, ISO 15765‑4, ISO 14230‑4, ISO 9141‑2, J1850 PWM/VPW, ISO 27145‑4, and EURO‑6. For most trucks, model years, and systems, it speaks the language your vehicle understands. Just plug it in and start diagnosing—no guesswork, no gatekeeping. Note: vehicle functions and module availability may vary by manufacturer and model year
- 【Save Hundreds on Diagnostic Fees】Why pay $150–300 for someone to read your codes? With the New ANCEL heavy duty truck scanner, you can pull fault codes yourself—in minutes, without leaving the truck. One or two uses pays for the tool. After that, every diagnostic is money back in your pocket. Smart investment for owner-operators, techs, and small fleets. Read and clear stored fault codes in minutes. Active fault codes may require repairs before they can be cleared
- 【One Tool, Total Fleet Coverage: 6/9/16 Pin Ready】Featuring an integrated 16-pin OBD2 connector and professional-grade 6-pin & 9-pin adapters, this heavy duty truck scanner provides extensive support for J1939, J1708, J1587, ISO 14230-4, ISO 15765-4 and ISO 9141-2, ISO 27145-4 protocols. It offers reliable diagnostic coverage for major American diesel brands—including Cummins
, Paccar
, Caterpillar
, Detroit, and Freightliner
—making it a versatile semi truck scanner for managing any diverse fleet. - 【2 in 1 Diesel Code Reader & Advanced HD OBDII】Equipped with professional-grade diesel scanner capabilities, the HD301 diesel scanner features intuitive Read/Erase codes and turn off the "Check Engine" light. With the built-in DTC Lookup library, you can instantly access fault code definitions on-device without searching the internet. It also retrieves hundreds of essential live sensor data—such as coolant temperature, fuel pressure, and engine RPM—in a stable text format for precise and rapid troubleshooting. (Please note that the HD301 can not support DPF Regen.)
- 【Full System Truck Diagnostic】The FOXWELL HD301 heavy duty scan tool is engineered to deeply access and scan all available electronic control modules specifically for truck, including Engine, Transmission, ABS, SRS, Chassis, and Body Control. This professional truck scanner diagnostic tool allows you to identify issues across the entire vehicle, ensuring your rig stays in peak condition for the long haul.
- 【Versatile for most big Rigs: Commercial, Passenger & Beyond】Engineered for more than just trucks, this heavy duty scan tool offers extensive coverage for pickups, buses, trailers, and even marine vessels. From construction machinery (excavators, loaders) to agricultural equipment (tractors, harvesters), it provides a true all-in-one diagnostic solution.
- 【Plug-and-Play & No Subscription】Designed for the road! No WiFi, no batteries, and no complex App setup required. Simply plug it into your vehicle’s diagnostic port to start scanning immediately. Enjoy lifetime free software updates to keep your HD301 diesel truck scanner current with the latest vehicle models and features—without any hidden subscription fees—While overcoming language barriers with support for Spanish and English.
Last update on 2026-06-23 / Affiliate links / Images from Amazon Product Advertising API
This product presentation was made with AAWP plugin.




