Everything that needs to be done is listed in your owners manual under the maintenance schedule.
Needs service NOW
The wrench light in a Honda Accord means that the vehicle needs maintenance soon. It usually means that you are over your recommended mileage interval for service and that it is time for an oil change and other similar maintenance procedures.
when it needs to be replaced
Reasons your 1999 Honda Accord is overheating can include a leak in the water hose, a blown head gasket, or the radiator cap needs to be replaced.
Normally it indicates you need an oil/filter change. It can also mean you need other service such as a cam belt replacement at 90,000 miles on your Honda Accord. Look in your owner's manual to find out what service needs to be performed at the mileage you now have. Your Honda has an interference engine so if the belt breaks serious engine damage will occur. Do not ignore replacing the cam belt at 90,000 miles.
According to the below answer 2002 accord after 105K miles it needs to changed.When_should_you_replace_a_timing_belt_on_a_2002_Honda_Accord
The air-condition belt on a 2001 Honda Accord also controls the heat. When the belt needs to be changed the ridges on the belt will show wear.
It means you engine needs attention.
A 2004 Honda Accord should have a complete tune up every 100,000 miles. The oil needs changed in the car every 3,000 miles.
slider needs high temp grease.
maybe needs gas filter
Check the #6 fuse. If it is good then the VSS needs replacing.