Audu Q7 2015 3.0L Gas won't start!
 

Hello everyone:
My first time on this blog and I need help.
I was driving my car Audi Q7 2015 3.0L gas on the highway and used my brakes constant (down hill on the Tennessee mountains) at average 80 miles an hour.
Burning smell started coming inside the car and I stop by next gas station. Turn car off and get gas. 5 minutes later, I heard a noise under the hood with a car turned off?
Lift the hood, and sounds like ABS pump running and smoke come from there. Check all wheels and there were okay, cold. Try to start my car and just a click noise.
Towed the car back home and replace the ABS pump, bleed system and car still don't start?
Anyone there can help me?