The first method is online upgrade: in the case of car navigation networking, find the car version of Gaode map in the car interface and click it, then click the "More" function in the lower left corner, then click "About" in the lower right corner, and then click "Detection Update" directly. After the update, you can use it directly.
The second method is to update the car through the mobile phone (please connect the mobile phone hotspot first for car navigation).