Hi, guys may i check with you with my second hand bravo 1.4 tjet 150hp manual gear:
1, the airbag indicator light is on steadily. screen shows:airbag failure see handbook. how to check if the airbags have already been changed by accident?
2, my turbo doesnot have the air pressure release sound, is that normal?

1. needs troubleshooting with appropriate software and hardware MES and/or Examiner.

2.100% Normal. If you do want to hear it you can do what i did:

Doing that with your dump valve isn't the best way as it is a recirulation valve,meaning it helps to keep the turbo spooling faster.
Disconnecting the recirc valve does lose a bit of power.
If you still want a turbo pressure release sound just fit a cold air filter

Better idea do nothing cars arnt supposed to have a turbo blow off sound frankly they just sound stupid
Same goes with induction kits
Many of them actually reduce performance as they end up sucking in hot air from under the bonnet

the turbo issue has been settled. it is actually the turbo pressure release valve leaking air.

for the airbag indicator light, i realized that my seat belt indicator light never light up even though i didn't fasten seat belt.
is it there any connections between seat belt & airbag? as i suspect the seat belt fasten switch fault cause the airbag warning indicator light up.