Recently, my wife told me she was having trouble seeing the dash lights in her automobile while driving to work in the mornings. While the solve was exceptionally easy, I realized that a lot of people that are not necessarily mechanically savvy might have actually trouble figuring out the problem. So, I made a decision to compose this write-up to assist people out.

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When dashboard lights go dim as soon as the headlights are turned on, it’s generally because modern vehicles immediately readjust the dashboard brightness because of the existing time of the day. Try adjusting your vehicle’s dimmer switch to reclaim the light levels to your desired brightness.

Here are a pair of examples of what a dimmer switch can look favor on your vehicle:



Wbelow Is the Dimmer Switch?

Often it’s some kind of dial close to where the headlights are turned on. But periodically it seems as if they’ve hidden it from us.

The dimmer switch is commonly uncovered on the left-hand side of the dash in the develop of a dial but it is sometimes is the very same knob that controls the mileage on the instrument cluster (wbelow the lights are). It might additionally be on the lengthy switch that sticks out of the side of the steering column.

In rare instances, dimming dash lights have the right to be a warning that your car demands maintenance or repair. The remainder of this article will help you pinsuggest what is causing the dimming so that you can take measures to deal with it.

How to Know if Dimming Is a Problem

If you discover it tough to check out your dashboard advises and information due to overly dimmed lights, this have the right to be a large trouble. It’s hard to safely drive once it’s tough to tell how fast you are going. I’ve had actually this issue prior to, and it’s fairly disconcerting, to say the least.


A prevalent reason for dimmed dashboard lights could be that the dimmer instantly reduces the light level in some vehicles when the headlights are turned on. The principle behind it is that our vision adjusts to nighttime settings and sees the light better under certain conditions, so your auto adjusts for it. But prior to we go dvery own that road, let’s just try an easy adjustment.

Locate the Dimmer Switch

Low dashboard light levels are many regularly brought about by someone accidentally bumping or turning the dimmer switch. Typically, tbelow is a dial on the left side of the dash or on the headlight regulate switch that sticks out of the side of the steering column. Try turning it up and dvery own to check out if that fixes it.

If you don’t can’t find the switch, please consult your car user’s hand-operated. Here is wright here it is on my Corolla and also my wife’s Sienna:

Corolla Dimmer Switch
Sienna Dimmer Switch (They hid it from us!)

Other Potential Causes

If turning up the dimmer switch doesn’t solve the concern, it can be a blown, inreliable fusage, or (less likely) a faulty bulb light. The lights in the dash are designed to last the lifetime of the auto, so this is something to have actually checked as the last retype. After you troubleshoot all other easy possibilities, try replacing the fuse first.

Can a Bad Battery Causage Lights to Dim?

A dying battery or battery terminals that are loose or corroded can definitely reason the dashboard lights not to occupational appropriately. Generally, they will go very dim while the car is being started. However before, a little amount of dimming is normal while the engine is turning over.

Tip: If you have to relocation badly corroded or damaged terminals, right here are some global ones discovered on Amazon.

Normally, if the batter is the problem, various other lights besides the dash will likewise flick or go dim while the vehicle is starting. Your interior lights or headlights will likely go dim or flicker also.

Check to See if a Battery Replacement Is Due

An alternator will keep your battery charged, but that doesn’t suppose it will last forever. A weak or dying battery have the right to cause fluctuations in power that, consequently, will certainly dim the lights. The vehicle might continue running smoothly, yet the problem is still there.

Many vehicles have a details light on the instrument panel cluster that will certainly tell you if tright here is a trouble with your battery. If replacing the battery doesn’t resolve the worry of dimming while the car is started, it could be an issue is the alternator. If that is the situation, it’s time to make an appointment through the mechanic.

Is It Common for Headlights to Dim When Using Power Windows?

The headlights shouldn’t dim as soon as you use power windows. It’s a authorize that tright here is an concern through a battery, power link, or grounding of the battery or window motor. It could be tough to situate the core difficulty, so it’s ideal to take your vehicle to a repair shop.

Bottom Line

Your dashboard is designed to provides you quick understanding right into your car’s performance and functionality. The instrument panel informs a driver around possible dangers, warns, and also various other important indevelopment that permit one to drive safely and also comfortably. The brightly colored lights display your engine’s performance, speed, gas level, temperature, and also many kind of various other aspects. However, what carry out you perform when your dashboard goes dim after turning on your headlights?

If you desire to deal with your dashboard lights, the initially point you have to do is examine your dimmer settings.

To execute that, you need to discover the dimmer switch or the collection of buttons responsible for dashboard lightning. Keep in mind that each vehicle is different. However before, regularly you deserve to find the light switch next to the steering column of the console. Anvarious other widespread location area of the dimmer is as one of the features on the headlight switch. You should revolve the switch or knob to the right to make the dashboard lights brighter.

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If that didn’t work, or none of the other potential fixes I mentioned, the entire switch could be faulty. You will certainly require a mechanic to rearea the switch. In rare situations, it can additionally be that your automobile has actually a deficient bulb. Or, tbelow could be a loosened link that doesn’t permit the bulb to run properly. Before assuming this is the concern, attempt replacing the fuse.

I hope you are able to resolve the issue without having to call a mechanic. However, if you do, the difficulty is often extremely minor, and also the repair price low. Good luck!