Q: 4x4 not working. Replaced transfer case motor, control module, and tested the 4WD switch. Everything is good.

asked by on January 24, 2017

Will not shift into 4x4

My car has 12000 miles.
My car has an automatic transmission.

Hi there. The synchronizer or fork inside the transfer case may be damaged causing the transfer case to not engage the front axle. Try to put the transfer case in 4 HI and see if the vehicle is engaging. If not, try to put the transfer case in 4 LOW and see if the vehicle will only travel at a low speed. If so, jack up the vehicle and have all 4 wheels off the ground. If the front driveshaft turns when the 4WD is engaged, then there is a problem with the front axle. If the 4WD is engaged and the front driveshaft is not turning, then there is a problem with the transfer case. If you need further assistance with your 4WD unit, then seek out a professional, such as one from Your Mechanic, to help you.

The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

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

What others are asking

Loss torque on accelration

It sounds like you are experiencing a lean condition and engine pinging. The most common fault I have seen for this is when the mass air sensor causes the engine to go too lean. When you look at the scanner...

oil light, security light, and battery light stay on after key is off and removed from ignition, whipers also quit working.

Hello. You likely have issue with your ignition switch or fuse box. More than likely it is a problem with your ignition switch. When an ignition switch goes bad internally it may cause other components to be stay on and...

My vehicle runs or idles rough. I was told that is normal, is it? And what are the signs of the transmission going out?

With a vehicle as new as yours, the likelihood of a transmission issue would be fairly slim unless damage has been done. The clanking and the rough idle may be the cause of the jerking motion. You should turn your...

2002 Ford Mustang won't start

You need to check for corrosion on the inside of the battery terminals. If they are corroded then you will lose connection to the battery and cannot jump start the battery either. Also check for good cable connections of the...

When a/c was on, steam from under hood and a/c went warm on a hot day and on another day came out cool for a several minutes

The source of the steam should be the first thing repaired. It is highly probable that once the leak is repaired, the A/C system will begin to work again. There are two fluid sources under the hood that can create...

After putting gas in my 2006 Ford Explorer, my car started sputtering and my Emissions light came on. Help!

Hello, thank you for writing in. Several things may be effecting your fuel system. While all gasoline has certain regulations to uphold to, not all gas is created equal, and the classic "bad gas" situation does happen. Secondly if the...

Third row seat not going down in 2007 Mercury Mountaineer

Hi. There are two 30 amp fuses that control the rear seats. Fuse 5 controls the left and fuse 12 controls the right rear folding seat. These fuses will need to be checked along with the relays that control each...

Multiple sensor error codes

Hi and thanks for contacting YourMechanic. For a all of the problems to occur all at once and make the cruise control and A/C quit, too, this is likely going to be a wiring issue. First check the condition...

Oil level too high

Related articles

The Best Used Cars to Buy for Dog Owners
Dog Dog owners are a special breed of drivers. When they shop for a used car they have a list of requirements that can be quite different from other drivers, which tends to make the process a bit of a...
A Buyer’s Guide to the 2011 Ford Ranger
The The 2011 Ford Ranger offers affordable pricing with excellent styling. It is a compact pickup that is both inexpensive to operate and own. The vehicle is capable of going off-road while still being able to tow 1,600 to 3,100...
A Buyer’s Guide to the 2012 Ford Flex
The The 2012 Ford Flex takes on a completely different look when it comes to a CUV. The Flex can tow up to 4,500 pounds and seat seven passengers comfortably. It also has lots of standard features that its competitors...