Brake System and ABS Warnings
When blinking, the brake or ABS warning light indicates that the brake light fluid has dropped below its optimum level. This should be checked as soon as possible before it develops into a more serious problem. If the light is red and constant do not drive the vehicle. The constant light is a sign of a comprehensive problem with the brake system, having the vehicle towed is the safest thing to do.
Check Engine Warning
A constant engine warning light is not indicative of an emergency as a range of minor issues could have occurred, such as a broken electrical sensor. The problem should still be investigated at the soonest possible opportunity. If the light is blinking then do not drive the vehicle as a severe engine problem and possible misfire has occurred. Driving in this state will inflict serious damage to a vehicle and should be avoided at all costs.
Oil Pressure Warning
An oil pressure warning light is a cause for concern. Pull over when possible and check the oil level personally. An oil leak is a likely cause of the problem but it can be temporarily mitigated by topping up the oil enough to reach a garage. If abnormal engine noise can be heard stop the vehicle immediately as the situation is potentially dangerous.
A coolant warning light is not usually a precursor to a serious problem. But like the oil warning light, it should be checked immediately and the coolant topped up if it is found to be below standard levels. A leak is the most likely problem but if the coolant level is fine then there may be an issue with the coolant warning system. A problem with the warning system does not require immediate attention but booking your car for repair at the nearest possible convenience is recommended.