Note: The service partner system has changed. Accounts from the old website are no longer valid. Please register again using your email address.
Use the service portal on mobile
Use the service portal as an app
You can save the Kerstner service partner portal on your smartphone like an app. This gives faster access to tickets, replies, attachments and downloads without installing a separate app from the store.
- iPhone / iPad: Open this page in Safari, tap the Share icon and choose “Add to Home Screen”.
- Android: Open this page in Chrome, tap the menu and choose “Install app” or “Add to Home screen”.
On a PC or Mac, continue using the portal in your browser as usual.
Service partner login
Log in
For approved service partners: sign in to access service cases and protected documents.
New registration
Request access
Please complete all details. Only the mobile number is optional. Kerstner Service checks your affiliation and activates access.