My 2003 Mercury Mountaineer has an electrical problem. It started about a year ago with the key fob not working, I have bought 3 and all won't work even after re-programing. now tonight I went to

Question 1

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2answers

My alarm goes off intermittently

Try resetting the alarm, using the instructions given at the link below. I'll also copy the text here.

Insert the ignition/door key in the door lock on the driver's- side door of your Mountaineer.
Turn the key to the lock position.
Turn your key to the unlock position.
Turn your key to the lock position.
Turn your key to the unlock position. Your alarm is now disabled. If your key fob works, you can also press the unlock or alarm-disable button on the fob.
Start the Mountaineer's engine and allow the vehicle to run for at least 10 minutes. This will allow the alarm to relearn the default settings. You must make sure that you have disabled the alarm first, however, before you attempt to start the vehicle, so that the alarm will reset itself.

http://www.ehow.com/how_5978302_reset-mercury-mountaineer-alarm.html

If these instructions don't work, you can try resetting the car's computer by unplugging the battery for half an hour. However, that will reset the keyless entry code, as you can see in the fixya article I link to at the bottom

http://www.fixya.com/cars/t4755856-we_bought_it_used_and_we_dont_know_the_k

Jun 10, 2015 • 2003 Mercury Mountaineer

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2004 Mercury Mountaineer premier with luxury package. We have a used 2004 mountaineer that i see sometimes comes with a factory remote start. We do not have the key fob. Before we buy a replacement key fob...

there should be a wired box under the dash ( steering wheel area ) that looks out of place , buy your fob on ebay , cheap there

Nov 30, 2014 • 2004 Mercury Mountaineer Premier

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My 2004 mercury mountaineer won't start, everything comes on, but the engine won't turn. we'vechecked all the fuses there all good, the starter turns when u do manually, but the whole veh

Is the battery good in it?

Nov 27, 2012 • 2004 Mercury Mountaineer

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2001 mercury mountaineer starts fine but sometimes won't start at all

I'm going to first assume that you've checked the battery terminals for gunk build-up. If the electrical system is OK, then the problem likely lies in the gas delivery. You might want to check out the starter anyway. Also, replace the fuel filter and put some Sea Foam or equivalent carb/electric ignition jet cleaner in the gas tank. I might add that your car is 17 years old. Start looking. . .

Jan 18, 2018 • 2001 Mercury Mountaineer

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My 2001 mercury mountaineer won't start it makes no noise but all the interior lights windows radio and other electrical things work

Your ignition starter is bad.

Aug 17, 2012 • 2001 Mercury Mountaineer

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Dash shuts off while driving a 2005 mercury mountaineer

Do you know anything about testing automotive electrical system's ? What a wiring diagram is an how to use one to find testing points in a electrical circuit ? Do you know what encompasses a automotive electrical circuit ? Power B+ side ,ground side , load or componet ? How to use a DVOM - digital volt ohmmeter . Voltage drop testing ? Free wiring diagrams here http://www.bbbind.com/free_tsb.html Enter vehicle info. year , make , model an engine size . Under system click body & accessories ,then under subsystem click instrument cluster . Watch these videos
Electric Testing Techniques You Need to Know

Nov 01, 2017 • 2005 Mercury Mountaineer AWD

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1answer

2003 mercury mountaineer it is starting to **** or feels like it's skipping when i am driving.. really noticable once it hits 60mph +

Sounds like a cylinder misfire to me. Scan your computer system for fault codes. If no codes are present, you can use mode 6 data to determine which cylinder or cylinders are not contributing and diagnose and repair accordingly.

Apr 13, 2012 • 2003 Mercury Mountaineer

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My 2004 mountaineer does not do anything when you try to start the car, lights and radio work. security light blinks rapidly when i try to start, but car does not even try to turn over, any suggestions

Security is set. Lock the car up. open it with the key and turn it on. this usually resets the security. If it doesn't use the key fob while its still on and unlock it.

Aug 14, 2011 • 2004 Mercury Mountaineer

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We turn the key and we get nothing! If you hook jumper cables up to the battery and to another vehicle, then it will start after a few minutes. The battery is brand new, and we just put a new starter on...

Brand new battery or not, from what you describe, it is clearly flat.

Only 2 possibilities here. Either the new battery you bought is defective (Its very rare, but it hapens) or the charging system on your vehicle is faulty and the battery isn't getting recharged.

If you have a volt meter, then test the battery when the engine is running and see what the voltage is, if it's as poorly charged as you have described, the voltage should drop slightly when you turn the engine off.

A very easy test of the charging system if you can't find a volt meter is to sit in the car with the door open, start the engine and watch the interior light as you turn on every electrical system in the car. If the interior light dims then you have a charging problem.

Jun 30, 2011 • 2003 Mercury Mountaineer

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The rear brake lights won't go out no matter what we do. (2003 Mercury Mountaineer) We tried starting the car...putting it in gear...backing up...going forward...turning headlights on and...

You have a faulty Brake Light Switch, and it is stuck on.

Replace your brakelight switch. Until you replace it, you could pull the breaker out of the fuse panel in order to keep your battery from dying.

Jun 21, 2011 • 2003 Mercury Mountaineer

Question 2

Anonymous

Could be a windshile leak down the A-Pillar & water
gets into the delayed accy relay for the GEM Module
(Body Computer as ford called it for a few years) & you
get what you have now

Try Goolge as I did a few weeks ago for a relative
He had the same issue with the blower being on &
killing the battery

No real fix I found for the windshield leak
Seem a robot didn't put the rubber sealant
on correctly at the factory fo about 5 years
on several fords.

If it isn't water related then the GEM Module
controls all those body features

If you get a used one & match up the numbers,
you supposedly can avoid buying a reman gem
& the expense of having to reflash it to your factory
built combination

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My 2003 Mercury Mountaineer has an electrical problem. It started about a year ago with the key fob not working, I have bought 3 and all won't work even after re-programing. now tonight I went to

1 Answer

Anonymous

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Related Questions:

My alarm goes off intermittently

2004 Mercury Mountaineer premier with luxury package. We have a used 2004 mountaineer that i see sometimes comes with a factory remote start. We do not have the key fob. Before we buy a replacement key fob...

My 2004 mercury mountaineer won't start, everything comes on, but the engine won't turn. we'vechecked all the fuses there all good, the starter turns when u do manually, but the whole veh

2001 mercury mountaineer starts fine but sometimes won't start at all

My 2001 mercury mountaineer won't start it makes no noise but all the interior lights windows radio and other electrical things work

Dash shuts off while driving a 2005 mercury mountaineer

2003 mercury mountaineer it is starting to **** or feels like it's skipping when i am driving.. really noticable once it hits 60mph +

My 2004 mountaineer does not do anything when you try to start the car, lights and radio work. security light blinks rapidly when i try to start, but car does not even try to turn over, any suggestions

We turn the key and we get nothing! If you hook jumper cables up to the battery and to another vehicle, then it will start after a few minutes. The battery is brand new, and we just put a new starter on...

The rear brake lights won't go out no matter what we do. (2003 Mercury Mountaineer) We tried starting the car...putting it in gear...backing up...going forward...turning headlights on and...

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2003 Mountaineer

My alarm goes off intermittently

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My 2003 Mercury Mountaineer has an electrical problem. It started about a year ago with the key fob not working, I have bought 3 and all won't work even after re-programing. now tonight I went to

1 Answer

Anonymous

Add Your Answer

Attachments: Added items

Related Questions:

My alarm goes off intermittently

2004 Mercury Mountaineer premier with luxury package. We have a used 2004 mountaineer that i see sometimes comes with a factory remote start. We do not have the key fob. Before we buy a replacement key fob...

My 2004 mercury mountaineer won't start, everything comes on, but the engine won't turn. we'vechecked all the fuses there all good, the starter turns when u do manually, but the whole veh

2001 mercury mountaineer starts fine but sometimes won't start at all

My 2001 mercury mountaineer won't start it makes no noise but all the interior lights windows radio and other electrical things work

Dash shuts off while driving a 2005 mercury mountaineer

2003 mercury mountaineer it is starting to **** or feels like it's skipping when i am driving.. really noticable once it hits 60mph +

My 2004 mountaineer does not do anything when you try to start the car, lights and radio work. security light blinks rapidly when i try to start, but car does not even try to turn over, any suggestions

We turn the key and we get nothing! If you hook jumper cables up to the battery and to another vehicle, then it will start after a few minutes. The battery is brand new, and we just put a new starter on...

The rear brake lights won't go out no matter what we do. (2003 Mercury Mountaineer) We tried starting the car...putting it in gear...backing up...going forward...turning headlights on and...

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2003 Mountaineer

My alarm goes off intermittently

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