Question about 2004 Mercury Mountaineer

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Fail safe mode

How do you get out of failsafe mode?

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OBD reader to see what the fault code is.Then fix the fault

Posted on Apr 26, 2013

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My question is what is the cause of engine fail safe of range rover?someone give some advice?


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    engine failsafe mode ' LandyZone - Land Rover Forum

Jan 11, 2016 | Land Rover Range Rover Cars & Trucks

2 Answers

The car error (failsafe engine mode) put coolant in and received this error. help.


the vehicle computer will go into fail safe mode when there is a problem with the vehicle. In failsafe engine mode you should go straight to a garage for repairing, usually is amajor problem

Jul 23, 2008 | Jaguar S-Type Cars & Trucks

2 Answers

Gearbox failsafe


means overheated, underoiled, ecu issue and plenty more. get a code scanner to identify

Oct 17, 2013 | Audi Cars & Trucks

1 Answer

Range rove 2004 is in engine failsafe mode is not starting?


You need an owners manual or access to factory
manuals to find out how many fail safes your vehicle has

Example: Electronic Throttle Control
Engine Over Temp
Transmission Failsafe
Misfire Fail safe to protect converter

Once you have checked for codes which I assume you have
done long ago,you use them as well as trouble charts to
diagnose things

Mar 29, 2013 | 2004 Land Rover Range Rover

1 Answer

Transmission in failsafe mode


I would not be surprised if your module or parts you replaced needs to be programmed or put in sync with the transmission computer or engine computer. Check with the dealer. Sometimes they have some silly or eccentric methods to get everything working together again. Cars are not very owner friendly anymore...

Jun 23, 2012 | 1999 Volkswagen Jetta

1 Answer

Engine Failsafe Mode came on after cleaning battery cables. Vehicle will start, but won't run. No throttle


Fail safe is TPS sensor. When you go in fail safe the vehicle give a set amount of RPM and no throttle response the rule of thumb in fail safe is APP1 and APP2 does not agree the goal is to protect the catalytic convertor. So if the transmission was at fault you dont over rev to end up burning the Cat. Or over rev to break the engine It all boils down to a throttle body assembly as the solution

Feb 22, 2012 | 2005 Mercury Mountaineer

1 Answer

Fail safe mode is on and car will not start.iwas told that i need a pcm


You have ETC Failsafe & Engine Temp Failsafe

Which do you have?

Nothing to do with PCM,who told you that,
and based on what type of testing ?

Mar 19, 2011 | 2005 Lincoln LS

4 Answers

Solution for the message "engine fail safe mode" in explorer 2005


I have hearing a lot of this lately with Fords. Most of the time this dash board light comes on due to problems with the Throttle Body (TB)not just your coolant,etc.. If it is sticking,dirty,causing misfires,etc. then this can cause an engine fail safe mode.You might first try putting in some injector cleaner and a higher grade of gas.Many people I know who have had this problem have had to have their TB cleaned and/or replaced. This is something Ford dealerships now about,but hasn't been made a recall or anything.There are service bulletins though.Mainly keeping cleaner in your gas and performing ritual tune-ups/oil changes may be the only thing you can do.Hope this helps

Apr 17, 2010 | 2005 Ford Explorer

2 Answers

What does Failsafe Engine Mode mean? my manual was stolen


Hello! Fail safe mode is when the vehicle's computer detects a serious problem an allows you to "limp" off the road or highway safely.

Fail safe mode on a Jaguar is mainly caused by a dirty and gummed up throttle body. The throttle body on your auto has a protective coating, so you can not use just any cleaner. It requires a throttle body cleaner that states "safe to use with a protective coating". The butterfly valve in the throttle body will actually "stick out". This causes fail safe mode to kick in reducing the amount of power your engine can produce.

Also check the plugs on your ECM (computer) and make sure they are all seated properly.


Guru...............saailer

Dec 13, 2009 | 1998 Jaguar XJ8L

1 Answer

My 2000 Jag S type also keeps saying failsafe mode?


fail safe mode is something the vehicle computor will go into when there is a problem with the vehicle it allows u to get off the highway or road safely you need to take vehicle to repair shop or your dealer which ever u prefer Failsafe engine mode on a 2000 jaguar s type is caused by a stopped up throttle body. Jaguar says not to clean the throttle body since it has a protective coating to help keep deposits from accumulating. You can clean the throttle body as long as you use ONLY throttle body cleaner that states it is safe to use with a protective coating. The butterfly valve in the throttle body will actually stick not allowing air to flow into the manifold causing failsafe engine mode to kick in reducing the amount of power your engine will produce. To solve the issue just clean out your throttle body, it will cost you around $5 dollars and take 1 hour of your time.

Jun 07, 2009 | 2000 Jaguar S-Type

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