CRTD4® TDI Tuning Box Vehicle Change (Harness Change Required)

*When purchasing, please be sure to enter the 'model number' and 'first registration date' as written on your vehicle inspection certificate in the remarks column.

*If it comes with Bluetooth, please also include the 13-digit serial number engraved on the BOX.

Even when you switch vehicles, TDI Tuning allows you to continue using your existing BOX economically. We will reprogram the BOX and you can purchase a new compatible harness to transition to a new vehicle model.

★Procedure for transitioning when switching vehicles★

Please provide us with information about your old vehicle and new vehicle by inquiry either before or after placing your order.

● If your BOX has the Bluetooth option

When ordering, please enter the 12-13 digit number engraved on the connector part of the BOX in the remarks column. (This is not the number on the label on the back of the BOX)
We will ship the harness within 2 business days, and the program for the new vehicle model will be uploaded to the BOX from the TDITuning app. After the harness arrives, please perform the operation while checking the included guide on how to upload.

● If your vehicle's BOX does not have the Bluetooth option

Since the BOX program needs to be rewritten, please send the BOX to the address below.

*A harness is not required.

○Shipping address
TDI Tuning JAPAN Technical Center
〒 594-1123
385-1 Fukuse-cho, Izumi-shi, Osaka
TEL 0725-24-3127

・After the BOX arrives at our company, we will reprogram it for your desired vehicle model and return it along with the new compatible harness.

*Customers are responsible for the shipping costs to send the BOX to us.
*We will ship within 2 business days of arrival.
*Transition may not be possible depending on the vehicle.
*The warranty period will not be extended.