Make sure you lock the hubs if your vehicle has locking hubs. However, it sounds like a fuse, check your fuses.
Kev.
Those all have electronic transfer cases. You put the vehicle in neutral or park, and turn the knob to either 4H or 4L. The hubs lock automatically.
Depends on if you have the electronic or manual transfer case. The electronic ones, they advertise as "shift on the fly" capable, but this is a really bad idea. Either way, put the vehicle in neutral... if you have manual locking hubs, engage the parking brake and lock the hubs by rotating them clockwise to the "lock" position. Then, if you have the manual transfer case, you pull the transfer case lever either to the 4HI or 4LO position... if you have the electronic transfer case, push the button either for 4HI or 4LO.
It is to pressurize the fuel system and allows the vehicles fuel system to keep adequate pressure after the vehicle has been started.
When you park your vehicle.
To set the parking brake in a 2012 Volvo S60, first ensure the vehicle is in the "Park" position if it's an automatic transmission. Locate the electronic parking brake switch, which is usually found between the front seats. Press down on the switch (it may have a symbol of a "P" with a circle around it) to engage the parking brake. You'll know it's set when the indicator light on the dashboard illuminates.
To engage the overdrive on a 1996 Ford Ranger, ensure the vehicle is in drive (D) mode. Look for the overdrive (OD) button on the gear shifter; pressing it will activate overdrive for fuel efficiency at higher speeds. The overdrive indicator light on the dashboard will illuminate when it's engaged. To disengage, simply press the button again, and the light will turn off.
http://www.kalpol.com/electronic/snapper/
To engage the four-wheel drive (4WD) in a 2005 Hyundai Santa Fe, locate the 4WD switch on the dashboard or center console. If your model has a manual transfer case, shift from 2WD to 4WD by turning the switch or moving the lever while the vehicle is in neutral or at a low speed. For models with automatic 4WD, it may automatically engage when needed. Always consult the owner’s manual for specific instructions and recommendations for your vehicle model.
To turn the overdrive on or off in a 2002 Chevy Tracker, locate the overdrive button on the gear shift or dashboard. Press the button to engage or disengage the overdrive; typically, a light on the dashboard will indicate when overdrive is off. If you want to use overdrive for better fuel efficiency during highway driving, ensure it is activated. Always consult the owner's manual for specific instructions related to your vehicle.
To engage 4-wheel drive on a 2000 Mitsubishi Montero Sport, first ensure the vehicle is stopped or moving at low speed. Then, shift the transfer case lever to the desired 4WD mode—either 4H (high range) or 4L (low range) depending on your needs. If shifting into 4L, make sure the vehicle is in neutral. Once engaged, you should feel the system activate, and the indicator light on the dashboard will confirm the selection.
To engage the four-wheel drive in a Mazda Tribute, locate the four-wheel drive (4WD) selector switch, typically found on the dashboard or console. Depending on the model, you may have options like "2WD," "4WD Auto," and "4WD Lock." Turn the selector to the desired setting while the vehicle is stationary, or, in some models, while driving at low speeds. Always consult your owner’s manual for specific instructions related to your vehicle's model year.
First you put the vehicle on Neutral then swithc to 4LO it will engage. If a wheel doesn't engage, then you have a vaccum line problem. See owners manual.