Whatsapp notification through bluetooth in a car

[apkpivot]

HI, Does anyone know how to get WhatsApp message notifications to appear if you connect a Galaxy S21 Ultra to your car through bluetooth please? I can see on the car screen when I have a text message but not a WhatsApp message. Also, I can't get WhatsApp calls through bluetooth in the car either - any suggestions?. I've exhausted Google and changed all the settings it says but nothing. I can't connect Android Auto to my car (no idea why) so can't use that. 

Thanks