Skip the auto shop - Our mechanics make house calls

Q: I think I have every warning light on right now

asked by on

Now because I live way out in the country, I buy trucks like my 2008 Toyota Tundra that are said to last longer and run reliably in less-than-ideal weather conditions. This truck was fine up until about 44,000 miles, when every light on the dash took turns lighting up! I am at 58,500 miles now and I am at a loss, I have driven it into town to the dealer 6 times now and I need a solution. What can I do about this? The check engine, 4wd, abs, etc. lights come on randomly.

A: Without my knowing what the dealer did or w...

Without my knowing what the dealer did or what they’ve explained to you, I can offer you this explanation, understand that every light requires positive (+) and negative (-) in order to light up. When the ignition is on, there is positive current supplied constantly to one side of each bulb. When a controlling component grounds the other side, the light comes on. The fact that all of your lights are randomly lighting up indicates that something in common with them all is sending ground signals to those lights. Inasmuch as you have taken it into the same dealer, it may be time for a second opinion, a fresh perspective. Be aware, however, that with miles and miles of wiring and lots of sensors and controls, unusual electrical problems are known to take some time to isolate.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Brakes randomly locking up.

Hi there. Your ABS system should keep the brake from locking up if it is working properly. With that being said, you may get different wheels braking at different times if the ABS unit sees the need to cycle the...

Q: Brake caliper sticking

Hi There, A few different things can make the brakes stick as you describe. The master cylinder may be causing this if it has not been properly bled. If you loosen the lines to the master cylinder and they free...

Q: no power to fuel pump

Hi - Check the ignition switch. You are going to have one wire from the fuel pump relay to the ignition switch. As you turn the key on, this is what powers the relay to turn on the fuel pump....

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Long Does a Heater Control Valve Last?
Keeping the right amount of coolant in a car is essential in keeping the engine at the right temperature. Failing to have the right amount of coolant or even bad elements...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...