lights dim when braking - Toyota Nation Forum : Toyota Car and Truck Forums

rice · 01-14-2006, 06:10 PM

why are my lights (dome light, every interior lights, dash, clock, etc) why are these lights dimming when I press on the brake pedal?? I did it in the parking lot while staying still, and then goes back to normal when I release the brake? is it telling me my battery is going out?

miss_biss · 01-14-2006, 06:19 PM

I don't know why your lgihts dim.

But I think you need a new car.

freakinbox · 01-14-2006, 07:23 PM

batter or alternator. Check the belt to make sure it's tight enough. Or if you have a stereo that it's not drawing to much power.

miss_biss · 01-14-2006, 07:25 PM

Or like I just did with my ae92..If it's costing you mroe regularly to repair your car to keep it running then it'd cost you to just get a new (or new to you) car then it's easy to see what you should do.

And by the looks of all the new threads your car has ALOT of issues.

***REN69*** · 01-14-2006, 07:28 PM

Kyle.. where's my parts!

Rice.. I'd say either battery or alternator.

freakinbox · 01-14-2006, 07:54 PM

I'd get it checked out soon though because if you let it go on to long it will end up being both! lol

punter · 01-15-2006, 04:34 PM

Quote:

Originally Posted by rice

why are my lights (dome light, every interior lights, dash, clock, etc) why are these lights dimming when I press on the brake pedal?? I did it in the parking lot while staying still, and then goes back to normal when I release the brake? is it telling me my battery is going out?

I would say you have a bad earth somewhere, they can be really hard to track down.

Liter · 01-15-2006, 07:56 PM

freak is right if it is the battery then the alt is going to working harder to charge it, if its the alt the battery is going to be used alot more. Get is checked out. I'd put my money on the alt though.

freakinbox · 01-15-2006, 10:47 PM

he could go get them both checked (y)

Liter · 01-16-2006, 12:41 AM

Oh definatley yes. But im jsut saying if i was a betting man id put it on the alt.

94_Rolla_Guy · 01-16-2006, 02:32 AM

could maybe be a short?, if it was a short youd probably find it in the bulbs themselves

89molavi · 01-16-2006, 02:41 PM

Ok, check your eletrical system with a voltmeter ($10). With the engine off the battery should be around 12 volts and with the engine running the battery should read 14 volts and that is the alternator charging. Try this and figure out which one is not working properly. If you change the alt then change the battery to, so the old battery would not kill the new alt.

epyon22 · 01-16-2006, 09:09 PM

how high is your idle at this point cause i know on my car it has a low idle after its warm and it causes every thing to dim and the load is alot when you do a simple thing

SR5_4WD · 01-17-2006, 06:05 AM

I suggest you really clean your battery poles. My car was doing the exact same thing and I did that. Worked perfect. But it does sound like a battery issue, but cleaning the poles would make it better for a while. Until you end up getting stranded somewheres.

rice · 01-17-2006, 03:20 PM

Quote:

Originally Posted by epyon22

how high is your idle at this point cause i know on my car it has a low idle after its warm and it causes every thing to dim and the load is alot when you do a simple thing

car idles good, around 800 fully warm, hey guys, i'm gonna change to a new battery probably tomorrow, the old battery died on me and my cousin charged it about 6 months ago, the lights dimming is not that bad, but if you look closely at the lights you'll notice they'll dim a bit when I hit the brakes, probably because the brake lights drawing power, but im not too worry about it, thanks guys for the replies