NHTSA ID Number: 11027871
Manufacturer Communication Number: HTB2508
TSB/Document Date: 2026-01-30
Summary
Husqvarna Mobility North America, Inc. has determined that a defect which relates to motor vehicle safety exists with certain model motorcycles listed above pertaining to the engine control unit software. An issue with the originally installed engine control unit software may cause the engine to stall at low rpms. A loss of engine power increases the risk of a crash which could cause injury to the rider or others and/or damage to property. To remedy this defect, it is necessary to install the updated engine control unit software on all affected motorcycles.
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TSB/Document ID: HTB2508
Replacement Service Bulletin Number:
MFR Communication Date: 2025-12-02
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: ELECTRICAL SYSTEM
MFR Component System:
MFR Component Subsystem:
Previous TSB | Next TSB |
RECALL: THIS MODIFICATION HAS TOP PRIORITY AND MUST BE
PERFORMED IMMEDIATELY TO ENSURE CUSTOMER SAFETY
SOFTWARE UPDATE ENGINE CONTROL UNIT
AFFECTED MODELS:
2024 SVARTPILEN 401
2024 VITPILEN 401
RESTRICTIONS: AFFECTED MODELS ARE LINKED BY VIN IN DEALER.NET
BASIC INFORMATION:
Husqvarna Mobility North America, Inc. has determined that a defect which relates to motor vehicle safety exists
with certain model motorcycles listed above pertaining to the engine control unit software.
An issue with the originally installed engine control unit software may cause the engine to stall at low rpms.
A loss of engine power increases the risk of a crash which could cause injury to the rider or others and/or
damage to property.
To remedy this defect, it is necessary to install the updated engine control unit software on all affected
motorcycles.
Husqvarna Mobility North America, Inc. is notifying all registered owners of affected motorcycles by mail. A copy
of the customer letter is included in this bulletin. The customer should take the letter along with the affected
motorcycle to an authorized Husqvarna motorcycles dealer to have the updated engine control unit software
installed.
Dealers must perform the engine control unit software update on all affected model motorcycles in their inventory
prior to any customer delivery. Any of the affected model motorcycles received directly from Husqvarna Mobility
North America, Inc. require the engine control unit software update prior to customer delivery. Affected
motorcycles acquired through dealer transfers or trades must be remedied and checked in Dealer.net to ensure
and document that the repair has been performed.
COPYRIGHT NOTICE
The user acknowledges that all components of this technical information are Husqvarna’s and/or third parties’ copyright protected property. Alteration, assignment,
distribution and reproduction are forbidden.
LIMITATION OF LIABILITY
The information included in or available through this technical information may include inaccuracies or errors. In no event shall Husqvarna and/or its suppliers be
liable for any damages whatsoever, arising out of or in connection with the use of this technical information. Please always refer to the Husqvarna owners and repair
manuals for proper instructions or contact the Husqvarna Dealer Services Department. ©2025 Husqvarna Mobility North America, Inc. – All rights reserved
Page 1 of 6
Motorcycles that are affected must not be sold or operated until the repair procedure has been performed as
described in this bulletin. It is a violation of Husqvarna Mobility North America, Inc. policy for an authorized
Husqvarna motorcycles dealer to deliver any affected motorcycles to customers before the procedure in this
bulletin has been performed.
Husqvarna Mobility North America, Inc. must report to the federal government on a regular basis how many
motorcycles have been repaired during this campaign. Be sure to submit your warranty request for
reimbursement on every motorcycle repaired to ensure accurate compliance numbers.
PROCEDURE FOR REPAIR:
We shall not provide a description of general workshop methods. Likewise, safety rules that apply in a workshop
are not specified here. It is assumed that the repair work will be performed by a fully trained mechanic who has
completed training or has a corresponding qualification. In the event of uncertainty, the most recent repair
manual must be consulted.
In the interest of clarity, some components may be shown disassembled or may not be shown at all. It is not
always necessary to disassemble the component to perform the activity in question. Please follow the
instructions in the text.
Software update engine control unit
Connect vehicle to the diagnostic tool and external voltage supply (XCharge) as shown in Figure
XC_2.
Fig. 1: Connection diagram for XC_2
COPYRIGHT NOTICE
The user acknowledges that all components of this technical information are Husqvarna’s and/or third parties’ copyright protected property. Alteration, assignment,
distribution and reproduction are forbidden.
LIMITATION OF LIABILITY
The information included in or available through this technical information may include inaccuracies or errors. In no event shall Husqvarna and/or its suppliers be
liable for any damages whatsoever, arising out of or in connection with the use of this technical information. Please always refer to the Husqvarna owners and repair
manuals for proper instructions or contact the Husqvarna Dealer Services Department. ©2025 Husqvarna Mobility North America, Inc. – All rights reserved
Page 2 of 6
Select the engine control unit and update the appropriate software (see Table. 1).
After successfully updating, switch off the ignition system for at least 1 min.
Switch on the ignition (key and stop switch) and wait 30 seconds.
Attention:
The engine must be switched off and the throttle grip must not be operated.
Clear fault memory.
Switch the ignition off and on again.
Start the vehicle and allow it to idle for at least 3 fan cycles.
Attention:
Do not operate the throttle grip.
Switch ignition off and on again.
Select control unit diagnostics and run AutoScan.
Check all control units for possible errors and if present, delete them inside the respective control
unit menu.
Attention:
Do not press the “delete all faults” button, because also the important engine control unit data is
getting deleted with this.
If the “delete all faults” button was pressed, the initialization run must be performed again to finish
this routine.
Table 1
VEHICLE LOCK INFORMATION:
Unsold motorcycles that are linked to this recall are locked in the vehicle history. The vehicle lock prevents
the motorcycle from being retailed to a customer before the recall is performed. In order to unlock the
vehicle you must perform the recall and then submit a TI claim. After the TI claim is submitted it will be
possible to unlock and retail the motorcycle.
COPYRIGHT NOTICE
The user acknowledges that all components of this technical information are Husqvarna’s and/or third parties’ copyright protected property. Alteration, assignment,
distribution and reproduction are forbidden.
LIMITATION OF LIABILITY
The information included in or available through this technical information may include inaccuracies or errors. In no event shall Husqvarna and/or its suppliers be
liable for any damages whatsoever, arising out of or in connection with the use of this technical information. Please always refer to the Husqvarna owners and repair
manuals for proper instructions or contact the Husqvarna Dealer Services Department. ©2025 Husqvarna Mobility North America, Inc. – All rights reserved
Page 3 of 6
WARRANTY INPUT INFORMATION:
This Technical Bulletin only affects certain VIN numbers! Please check the VIN by performing a
Motorcycle History search in Husqvarna Dealer.net to determine if it’s affected. If the motorcycle is
affected you will see a link to the bulletin and its repair status in the history results. Husqvarna Mobility
North America, Inc. will not warranty units whose VIN numbers are not listed as this bulletin does not
apply to them. It is the responsibility of the dealer to determine if the unit requires this update by
checking the vehicle history and understanding the instructions provided by this bulletin.
To submit a TI claim click the arrow on the right side of the corresponding technical information message to
start the claim process.
You can now choose the TI Number from the list. The TI number for this procedure is according to the repairs
performed and listed in the warranty claim input information; click Continue with selected action code.
The Warranty Claim is automatically entered for you, including parts & labor. You must enter additional
information in the required fields marked with an asterisk “*” before submitting the claim to Husqvarna
motorcycles. The flat rate time for this repair is based on the action performed and provided in minutes.
Warranty type:
TI-Warranty
Assembly group:
41 – Throttle Body
Failure code:
700 – Serial Improvement
Failure causing part:
96341031000 – ECU EMS
Action code, parts, labor:
Software update engine control unit
Action code:
41_2598839_00
Labor:
10 Minutes
Parts:
Are stock parts affected
No
COPYRIGHT NOTICE
The user acknowledges that all components of this technical information are Husqvarna’s and/or third parties’ copyright protected property. Alteration, assignment,
distribution and reproduction are forbidden.
LIMITATION OF LIABILITY
The information included in or available through this technical information may include inaccuracies or errors. In no event shall Husqvarna and/or its suppliers be
liable for any damages whatsoever, arising out of or in connection with the use of this technical information. Please always refer to the Husqvarna owners and repair
manuals for proper instructions or contact the Husqvarna Dealer Services Department. ©2025 Husqvarna Mobility North America, Inc. – All rights reserved
Page 4 of 6
IMPORTANT SAFETY RECALL NOTICE
NHTSA Recall No. XX-XXXX
This notice applies to your motorcycle, VIN: «Vin»
«PdiFirstName» «PdiLastName»
«PdiAddress1»
«PdiCity», «PdiProvince» «PdiPostalCode»
12/xx/2025
RE: Affected models:
2024 SVARTPILEN 401
2024 VITPILEN 401
Dear Husqvarna motorcycle customer,
This notice is sent to you in accordance with the requirements of the National Traffic and Motor Vehicle Safety Act.
Husqvarna Mobility North America, Inc has determined that a defect which relates to motor vehicle safety exists with certain
model motorcycles listed above pertaining to the engine control unit software.
An issue with the originally installed engine control unit software may cause the engine to stall at low rpms.
A loss of engine power increases the risk of a crash which could cause injury to the rider or others and/or damage to
property.
To remedy this defect, dealers will install the updated engine control unit software on all affected motorcycles, free of
charge.
Please contact your authorized Husqvarna motorcycles dealer (log onto www.husqvarna-motorcycles.com for a complete
dealer listing) as soon as possible to arrange having the updated engine control unit software installed. It is suggested that
you call your local authorized Husqvarna motorcycles dealer to make an appointment to have the recall repair performed.
The procedure will take approximately 30 minutes. However, it may be necessary to leave your motorcycle with the dealer
for a longer period of time depending on their work schedule and if they need to order replacement parts. Please present
a copy of this letter along with your motorcycle to your local authorized Husqvarna motorcycles dealer.
If you have any questions related to the content of this letter, please contact Husqvarna Mobility North America, Inc.
Customer Relations at (888) 985-6090 for assistance.
If your dealer fails or is unable to remedy this defect without charge, or within a reasonable amount of time, you may submit
a written complaint to Administrator, National Highway Traffic Safety Administration, 1200 New Jersey Avenue, S.E.,
Washington, DC 20590 or call 1-888-327-4236 (TTY: 1-800-424-9153); or go to http://www.nhtsa.gov
If you have sold, traded or no longer own this motorcycle, it is important for the safety of the current owner that you inform
Husqvarna Mobility North America, Inc. of current ownership or unknown ownership status by returning the second page
of this letter in the enclosed self-addressed prepaid postage envelope.
If you are a vehicle lessor, Federal Regulations require you to forward this notice to your lessee within ten days.
COPYRIGHT NOTICE
The user acknowledges that all components of this technical information are Husqvarna’s and/or third parties’ copyright protected property. Alteration, assignment,
distribution and reproduction are forbidden.
LIMITATION OF LIABILITY
The information included in or available through this technical information may include inaccuracies or errors. In no event shall Husqvarna and/or its suppliers be
liable for any damages whatsoever, arising out of or in connection with the use of this technical information. Please always refer to the Husqvarna owners and repair
manuals for proper instructions or contact the Husqvarna Dealer Services Department. ©2025 Husqvarna Mobility North America, Inc. – All rights reserved
Page 5 of 6
If you have already paid for a repair related to this concern before the date of this letter, you may be eligible for
reimbursement. Please contact Husqvarna motorcycles Customer Relations at the number above for more information.
We apologize for any inconvenience and want to assure you that our commitment together with all Husqvarna motorcycles
dealers is to provide you with the highest level of service, support and customer satisfaction.
Best Regards,
Dealer Services Department
Husqvarna Mobility North America, Inc.
COPYRIGHT NOTICE
The user acknowledges that all components of this technical information are Husqvarna’s and/or third parties’ copyright protected property. Alteration, assignment,
distribution and reproduction are forbidden.
LIMITATION OF LIABILITY
The information included in or available through this technical information may include inaccuracies or errors. In no event shall Husqvarna and/or its suppliers be
liable for any damages whatsoever, arising out of or in connection with the use of this technical information. Please always refer to the Husqvarna owners and repair
manuals for proper instructions or contact the Husqvarna Dealer Services Department. ©2025 Husqvarna Mobility North America, Inc. – All rights reserved
Page 6 of 6
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