Usually low tire pressure - usually from cold weather.
low tire pressure
The exclamation point warning light on a BMW 650I indicates low tire pressure.
Brake system warning light.....
your question makes no sense. the imobilzer would be if you disconnected battery.it shouldn't matter if you replaced it with a 04 engine. unless you have a bad crank position sensor. or a bad ignition switch for security.
The exclamation mark on any sign is an alarm or warning. With a fire symbol, the sign is warning of combustibles nearby.
it means your handbrake is on
An exclamation mark inside a triangle is a warning sign. This can be a warning sign on many devices including a car, a computer, or a cell phone.
The red exclamation point in a circle is the parking brake indicator.
Parking bake is on.
low tire warning
Usually, " warning!!!"
handbrake light