Can a Vehicle Have No Warning Lights and Still Need a Scan After a Crash?

Many drivers rely on a warning light or dashboard warning as a sign that something is wrong. While indicator lights are helpful, they are not designed to catch everything. In fact, some diagnostic trouble codes never trigger a dashboard warning light at all. These codes can exist quietly in your vehicle’s computer systems without activating the instrument panel cluster or combination meter. That means your vehicle could have system issues without any visible alert.