You will find m2x 10mm up to 50mm on Ebay, Aliexpress and Amazon.the steering wheel has screws near the toot button around the OK button on the right and microphone button on the left. They are very unusual M2 socket head thread cutting. The outer diameter is 2mm, total length8.25mm, with a 4.20mm diameter head. Like this, but smaller: https://www.gobilda.com/m4-thread-forming-socket-head-screws if anyone has a source for such screws, with a longer threaded portion, I'd love to know about it.
These are Au sites but you should be able to find the same on US sites.
Look for m2 socket head self tapping.

M2 M2,6 M3 M3,5 M4 M5 M6 Sechskant Innensechskant Kopf selbstschneidende Schraube 8,8 Güteklasse Schwarz/Nickel Zink Innensechskantschraube für Lautsprecher - AliExpress 13
Smarter Shopping, Better Living! Aliexpress.com