it it stablzing itself
handbrake cable needs shortening
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the red exclamation mean the system updates fail and yellow exclamation means clint needed patches
it means that your tire needs air pressure .
It sounds like the switch for your emergency flashers.
parking, or emergency brake
The red exclamation point in a circle is the parking brake indicator.
oil or brake fluid needs to be changed
Air pressure in (one of) the tires is low. So check for leaks
the blue caution triangle with an exclamation mark, next to the persons name means that there were messages that did not send and to get rid of the blue triangle you can either send the messages or delete them. the messages that did not send should have a red circle with an exclamation mark next to it.
Usually it means an Engine Problem. Get it checked out before something goes terribly wrong.