Confirmed: Xhorse VVDI key tool plus programmed a remote on a 2019 Subaru today. Lonsdor and OBDSTAR X300DP both failed to communicate with the car.
Path: Homepage -> Immo Programming -> Subaru -> Select from system -> Program a remote.
Besides, VVDI key tool plus can program Subaru Keyless Go key and Normal key.
For example, program Subaru Keyless Go key:
Type C (4D 60/62)
Type D (VX)
Type 3
Type 4
Type 5 (Toyota CAN)
After entering each type, there are operating instructions, please read them carefully, and then click on “Start programming”.
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