Skip the auto shop - Our mechanics make house calls

Q: Gauges going crazy

asked by on

I have a 2008 Mercury Mariner 4WD V6 3.0. Sometimes I have issues starting, it seems the Key is not recognized and the Security lock flashes, after a few tries and a couple of bangs to the gauge cluster it starts up. Then while driving suddenly all needles go down to 0, and most all indicator lights on the dashboard light up, also when pressing the break you can hear a click on the shift lever selector, if the AC is on it goes off, the blower stays on but no cold air, car is driveable and has no issues, other than these. After a pothole or again some banging everything comes back to order and then goes back, and really cannot replicate when exactly it happens. I took out the ECU and sent it in for diagnostics, all is good with it. Any ideas?

My car has 85000 miles.
My car has an automatic transmission.

A: This may be related to a short, a faulty in...

This may be related to a short, a faulty instrument cluster or a faulty instrument voltage regulator. The instrument voltage regulator regulates the voltage supplied to the various gauges in your vehicle’s dash. When this is not working properly, this may cause the gauges in your dash to dim or flicker erratically or in some cases provide false readings. I would recommend having an expert from YourMechanic come to your location to diagnose and replace your instrument voltage regulator.

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: Steering wheel isn't straight after getting an alignment

Hello. In order to properly adjust the steering wheel an alignment must be properly performed. It sounds like you have not had a good alignment. If you get an alignment the steering wheel should always be straight when you are...

Q: Car stalling when driving

Both of the codes you mentioned have the MAP sensor in common. It is possible that the MAP sensor is faulty on your vehicle. When the vehicle's PCM picks up that the MAP sensor is not functioning, it goes into...

Q: I have a 2008 BMW 335i battery died. I have been told I need to have it mated or registered to my electrical system to prevent ove

Hi there. This video is a pretty good tutorial on removing and replacing the battery on your 335i. You may have to reset the electrics on the vehicle, which this video shows how to accomplish this step. There is no...

Related articles

P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.