Since all of the 99 Acura TL dash lights and gauges are giving a problem, then the power or ground wires need to be checked. These are the only two things that are common to all of the items that are giving problems.
they dont work
i had the exact same problem with our 91 voyager, i cleaned the battery terminals and the problem went away immediately
It means that you have a low reading on one of the gauges and you need to address the problem.
Usually when the gauges jump around there is some kind of computer problem. Your problem can lie in the body control module or in the ECM. Without looking at it, that is a tough call. The instrument cluster could be bad too. Those are the things I would check first.
The check gauges light comes on when one of the gauges is not in the safe range.
Usually around 220.
There is no reset for a check gauges light. If the light is on, there is a problem either with the temperature oil pressure or voltage.
You may need to have the "Body Control Module" replaced on your car. We have a 2002 Saturn L200 and the same symptoms occured. Dash lights were flashing, dome light flashing, couldn't shift out of park, etc. Dealer replaced the part under warranty (at the time) and we haven't had the problem since.
Posible relay problem
as a gm tech will tell you ,if you have a light flashing on your instrumental panel you obiously have a problem if it states check gauges ,check wich gauge in your dash may be currently inop know this may happen at times or friquent suggest to use a scanner cappable of diagnosing pid operation and check for dtc's if you have no clue on what I'm talking about please have veh service at your local dealer or a known good mechanic,..
This is a common problem with Chevy trucks around that year. The problem is caused by bad stepper motors behind the gauges. There are several places that can repair this or you can replace the instrument cluster.
One of the gauges should show a problem such as overheating, not charging or drop in oil pressure.