Anchorage, AK. Conditions-snow and icy roads. 1997 Suburban. Light is flashing on the 4 Hi selector. Lost 4x4 function. Thought it was actuator (plunger) switch, so replace with same. ($124.00) (heat activated) Light still flashes, and still no 4 x4. This all came about after backing out of driveway. No sudden change or event before this happened. Usually leave 4 Hi engaged for most of winter, except if driving on highway and it is in good condition. What it next step???
I do hear the tranfer case engaging.
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Re: 4 Hi light flashing
Try this before you do any repairs or sp[end any other money. Make sure that vehicle is on a flat surface. Start vehicle and Push down on brakes while holding brake put vehicle in neutral. Still holding brakes in NEUTRAL, Engage 4x4, it should work. If it doesn't get back to me. Good Luck. If I fixed ya leave me a FIX YA comment
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Well it could be the selector switch, but I doubt it. Generally, the service light means something is not working that the computer controls. Solenoids and valves are a couple of possibilities. The transfer case is shifted by solenoids commanded by the body computer based on the switch position on the dash. You should be able to have a shop scan the body computer for trouble codes and proceed from there. A basic code reader may not access the body computer.
My 4 wheel drive stop working on my 2001 ZR2 chevrolet Tracker. It has a
shifter on the floor and when it is put into 4 hi or 4 lo. the vehicle does not change from two wheel drive into 4. The 4x4 Dash light indicator stop coming on. What should I check?
I lost 4x4 traction when driving in icy conditions.
This is probably normal as on ice or snow your wheels will slip and both the traction control and ABS will activate. Does your brake pedal vibrate a bit. It also means you are probably going to fast for road conditions
I believe that Mitsubishi has one of the best and easiest 4X4 selector systems on the Pajero/ Montero. Just below the gear shifter lever is the 4X4 mode selector. A lever like the gear shifter that works in a up, down movement. On your dash board you will notice a sort of axle, chassis diagram in green light. In normal 2WD or 2H mode the lever is set all the way back and on the dash only the rear wheels a lite up in green light on the axle, chassis diagram. This is for normal driving on the highway and smooth roads of dry dirt roads. Pushing the lever up wards while moving at crawling speed will engage the light 4X4 mode which is 4H for when the driving gets a little slippery. All 4 wheels on the axle/ chassis diagram will be lite green. Shifting the lever from the 4H position to the left and upwards will engage the 4HLc mode for 4X4 on sand and deep snow. This will also engage the central diff lock which will show on the axle/ chassis diagram on the dash board with the center box also lite up. Further up from the 4HLc mode and while pushing down on the 4X4 lever push it to the top most position, but only do this when at a stand still with your foot on the brake pedal. This will engage the 4LLc mode with 4X4 and central diff lock on for when driving gets sweaty on thick mud up and incline. To disengage this mode stop, foot on break put it in P and then pull down the lever to one of the lower settings.
First, make sure the engine is sufficiently warm, at least 80 degrees. The vehicle should be slowly rolling at about 2 to 5 mph and the transmission should be in NEUTRAL when shifting into 4x4 Low Range. It will grind and/or lockout otherwise. 4x4 High is suitable for snow and ice driving on pavement or gravel roads.
Your noisy experience with your ABS and ECS is exactly what all of these systems do in icy, snowy, and any environment that causes your tires to lose traction. The ECS light when blinking or illuminated is just informing you that the ECS is being activated to let you know your traction is limited.
I have an Elantra and have driven my GF's '06 Sonata many times. I live in MN and it does the same thing with snow etc. and so has past cars i've owned such as Subaru Legacy, Pontiac Grand Prix, and Toyota Camry.
With ABS it does seem to take quite some distance to stop in icy or snowy conditions. When it's dry it's impossible to beat.
That light sounds like a differential lock or 4-wheel drive. This is usually found in 4-wheel drive and all-wheel drive vehicles. Being the light is "GREEN" and not amber or red tells me that it's not an abnormal problem.
Look around your dashboard or gearshifter for a button labeled 4x4 HI, 4x4 LO, 4x2 HI. sport/off road button, or a second, smaller shifter. Switch them around a little, and if it is a 4x4 selector, be sure when you drive on paved roads to have it set to 4x2 HI. 4x4 HI should only be used if you get stuck to help you get out (snow/mud) and 4x4 LO is only for off road driving (trail blazing/rock climbing/4-wheeling/mud bogging,etc.)
Also, check for any switches labled "DIFF LOCK" or 'AXLE LOCK". In most cars a green light is normal operations.
I hope I could help you find a solution to your problem.