1-Locate the warning lights box and unscrew the two securing screws
Tools: Flat screwdriver
2-Gently pull off the warning lights box
3-Mark the wiring and remove the bulbs by simply sliding them off
If not sure, have a look at the wiring diagram
4-Perform a warning lights test and swap the bulbs
Test is usually performed by selecting R at the gear selector and turning the key as if to crank the engine. In normal conditions every warning light should lit.
NOTE. On my car anyway, the coolant level warning light is NOT part of the test.