Question about 2008 Toyota Prius

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Warning lights came on

I was doing a oil change and was driving to the store al of a sudden brake system light came on the master light and vehical stability control syste, warning light came on

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May just be a coincidence that the brake warning light came on after the oil change . have you checked the brake fluid level ,if low check the brake pads, if not low check for leaks

Posted on Mar 25, 2014

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Posted on Jan 02, 2017

  • 4102 Answers

SOURCE: warning lights

hi this could be one of a couple of problems the first could be that the alternator isnt charging the battery properly unless you get the revs up then the lights go off. This is the usual problem
The second problem would be a bad earth that comes from the battery if this is the case then removing the earth wire where it comes from the battery and goes to the engine or chassis and then clean behind where this earth touches the chassis or the engine use something like sand paper to remove any corrosion then put the earth wires back on then check if you still have the problem.

Is the brake and battery warning light just one light or is their a light for the brake warning light and a seperate warning light for the battery.

As you say when you apply the brakes or signal these lights come back on then it is going to be a voltage problem it could even be that the battery needs replacing this will need to be tested.

The first thing you should do is get the battery and alternator tested as one of these or even both is often the cause of the problem you are having.

Let me know how you get on or if you have any problems or questions just give me a shout back ok

Posted on May 28, 2008

  • 4 Answers

SOURCE: THE BRAKE LIGHT WARNING LIGHT COMES ON AND THE

well here's a start towards ur problem, due to the auto circuits u have an open return to the negative side of the battery. Have you done anything with the vehicle's systems before this started? the reason fo the strange lighting is that a positive voltage is being applied to what normally would be return side. You will need to get an electrical diagram if possible to pin point area if as previously asked didn't occur.

Posted on Mar 02, 2009

  • 104 Answers

SOURCE: Maintenance light suddenly came on. Have had an oil change recently. Do I need to take it to the dealer or the oil change place to reset it or can I do it myself?

press and hold the trip a reset button then turn on ignion key to the run postion till the light turns out

Posted on Apr 17, 2009

  • 566 Answers

SOURCE: Camry CE 2001: Changed the brake light in the

hi the rear high level brake warning light in rear screen ? works with the other two brake lights at same time when you press brake pedal with ignition on ? so may i suggest you check the other brake lights are working ? if not ? check these bulbs? reason being that from the symptoms you describe that high level light is staying on ? it would suggest that the brake light switch at the pedal is not operating ie not putting brake lights off when pedal is off and would suspect the brake lights have been on for some time and burned bulbs out due to the brakelight element in bulbs are high wattage if you check on what i have suggested? and is the case ? come back and will advise you how to adjust brake switch easy diy hope this helps? best wishes from the uk

Posted on Jan 01, 2010

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  • 24 Answers

SOURCE: My check engine light came on a week ago with the

Either take it to a autoparts store and they will turn it off or disconnect the battery for five minutes and the computer will reset. If it comes back on your local auto parts representative can harmlessly run a code check on it to see what the problem is.

Posted on Jan 05, 2010

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The Brake warning light comes on. I checked the brake fluid level in master cylinder & it was okay. The fluid looked dirty. Please help


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The brake warning light could be that the parking brake is not fully released or the fluid in the master cylinder is low. Check both but if the master is low, you should have your brakes check because that's where the fluid went.

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Have a 99 Toyota camry n brake light is on after changing right front brake caliper


Master cylinder fluid piston has entered into a brake safe mode.
when the high pressure brake system is opened in any way, the brake master cylinder piston reaches to the far end of the master cylinder which trips the brake system warning light.

This brake light condition is due to sudden loss of brake fluid pressure on the right front brake caliper assembly during the replacement.

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2001 ford windstar lx master cylinder new i replaced but abs n brake light come on


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On my 2008 ford escape, there is a light on my dashboard that keeps coming on. it looks like a box with an exclamation mark in the middle. i dont know what that means. im wondering if i need a tune up or...


Brake warning light.

If the light is on all the time, it could mean you simply forgot to release the parking (emergency) brake. The brake warning light remains on when the brake is set as a reminder. If the brake warning light remains on when the parking brake is released, then something is amiss.
In some cases, the brake warning light may remain on if the switch on the parking brake pedal or lever is misadjusted. Nothing is wrong with the brakes and a simple adjustment should fix the problem.
If the brake warning light comes on when you apply the brakes, or is on continuously, it means that hydraulic pressure has been lost in one side of the brake system or that the fluid level in the master cylinder is dangerously low (due to a leak somewhere in the brake system). In either case, the fluid level in the master cylinder should be checked. Adding brake fluid to the master cylinder reservoir may temporarily solve the problem. But if there's a leak, the new fluid will soon be lost and the warning light will come back on.

http://autos.yahoo.com/maintain/repairqa/warning_lights/ques010_0.html

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1 Answer

My brake lights stay on after I turn off the car


Hello,

If the light is on all the time, it could mean you simply forgot to release the
parking (emergency) brake. The brake warning light remains on when the brake is set
as a reminder. If the brake warning light remains on when the parking brake is
released, then something is amiss.

In some cases, the brake warning light may remain on if the switch on the parking
brake pedal or lever is misadjusted. Nothing is wrong with the brakes and a simple
adjustment should fix the problem.

If the brake warning light comes on when you apply the brakes,
or is on continuously, it means that hydraulic pressure has been lost in one side
of the brake system or that the fluid level in the master cylinder is dangerously
low (due to a leak somewhere in the brake system).
In either case, the fluid level in the master cylinder should be checked.
Adding brake fluid to the master cylinder reservoir may temporarily solve the
problem. But if there's a leak, the new fluid will soon be lost and the warning
light will come back on.

Brake fluid leaks are serious because they may cause the brakes to fail!
So avoid driving the vehicle until the system can be inspected to determine what's
wrong. Leaks can occur in brake hoses, brake lines, disc brake calipers,
drum brake wheel cylinders or the master cylinder itself.
Wet spots at hose or line connections would indicate a leak that needs to be fixed.

Leaking brake fluid can also contaminate the brake linings,
causing them to slip or grab. The uneven braking action that results may cause the
vehicle to veer to one side when the brakes are applied. Brake shoes or pads that
have been contaminated with brake fluid cannot be dried out and must be replaced.

Hope this helps.

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