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FAQs
1. Where do I get a username and password to access Navistar software?
  • When you install the application, a screen pops up asking if you want to install it as a new or existing user.
  • Select New User.
  • Another screen pops up asking for your personal information. Type in your information and click on Submit.
    NOTE: You must type in a valid email address when completing the form.
  • The system will email you your username and password.
    NOTE: The password emailed to you is temporary and you MUST reset the password using the link emailed to you before logging into the application!
  • Your password can be reset at http://password.navistar.com. For additional support, please contact Dealership Support to reset your password:
    • US and Canada – (800) 527-7879
    • Latin America – (800) 527-7879 (International call rates apply)
    • Mexico – (800) 713-9405 to reset your password.
  • Update your default password given by Dealership Support using Password Reset. If you do not update through this link it won’t let you continue.

    NOTE: You are required to change your password twice a year.
2. I have forgotten my password, or it has expired. How can I change my password?

The steps to reset your password can be found in the Self-Service Password Reset Document. This utility cannot be used if you have not set up a profile through Multi-Factor Authentication. You can change your password on the Self-Service Password Reset site at http://password.navistar.com.

Please keep in mind that Passwords need to be changed twice a year. Navistar applications will give you a warning when you have 7 days or less remaining. For additional support, please contact Dealership Support to reset your password:

  • US and Canada – (800) 527-7879
  • Latin America – (800) 527-7879 (International call rates apply)
  • Mexico – (800) 713-9405 to reset your password.

3. I know my password but cannot log into my account. How can I get back into my account?

If you know your password but cannot login, you can try unlocking your account on the Self-Service Password Reset site at http://password.navistar.com. The steps to unlock your account can be found in the Self-Service Password Reset Document. This utility cannot be used if you have not set up a profile through Multi-Factor Authentication.

Please keep in mind that Passwords need to be changed twice a year. Navistar applications will give you a warning when you have 7 days or less remaining. For additional support, please contact Dealership Support to reset your password:

  • US and Canada – (800) 527-7879
  • Latin America – (800) 527-7879 (International call rates apply)
  • Mexico – (800) 713-9405 to reset your password.

4. What information do I need to create or reset a password?

In order to create or reset a password, follow this guide: Multi-Factor Authentication Guide then you will need to setup 2-Factor Authentication at http://password.navistar.com.

Please keep in mind that Passwords need to be changed twice a year. Navistar applications will give you a warning when you have 7 days or less remaining. For additional support, please contact Dealership Support to reset your password:

  • US and Canada – (800) 527-7879
  • Latin America – (800) 527-7879 (International call rates apply)
  • Mexico – (800) 713-9405 to reset your password.

5. Can I use the same username and password for multiple Navistar applications?
The same username and password can be used for Navistar® Engine Diagnostics, Diamond Logic® Builder, NavKal™, and HeRo.
6. What are the requirements for the password I use to access Navistar software?
Your password must have the following characteristics:
  • At least 12 characters
  • At least one upper case letter
  • At least one lower case letter
  • At least one number or special character
7. I need additional CYY usernames. How many can I get, and how do I do so?

Up to 5 additional usernames can be created within the software application. This can be accessed by selecting Help > Registration > Request Additional Users. This will open a registration window. Fill in all of the required data and click OK to submit the request.

You will receive an email confirmation with the new username and a temporary password. The temporary password must be changed by using the link in the email before signing into the software.

8. I entered my product key and now the software is trying to log me in as CYY0000. What is my password?

If the software attempts to log you in as CYY0000, then the product key was either invalid or incorrectly entered. Please check your product key and re-enter.