Liftgate opens then bounces up and down then closes back. What causes this?
Lift gate stopped working and now I am able to open it, but it automatically wants to shut back agin. It opens completely then it bounces a few times and then shuts completely. What would be causing this?
My car has 89000 miles.
My car has an automatic transmission.
Experienced mechanics share their insights in answering this question :
The rear door has built in sensors and power motors that work together to close the door automatically when you push the close button. If there is a shorted button then this could cause it to close again as soon as it is opened. I recommend keeping children and your hands away from the door until it is fixed. Make sure the inside controls on the display are set correctly by the owners manual to the rear door operation. I’d suggest you get this checked out by a qualified technician who can diagnose the issue with your lift gate and make the necessary repairs.
How to Identify and Fix Common car Problems ?
Our sources include academic articles, blog posts, and personal essays from experienced mechanics :
Pull the liftgate down to the desired height and hold the liftgate (the liftgate will have some resistance when being manually adjusted). 3. While holding the liftgate in position, press and hold the liftgate switch located on the liftgate for approximately 5 seconds or until two beeps are heard.
If in your test for lowering, the gate raises fine but just will not lower, it most likely is a bad lower valve and coil. Feel the valve when activating switch. You should feel a pulse on the valve and hear it click. If you can`t feel the valve activate or hear a clicking, change the valve and coil.
Common symptoms of a bad power liftgate latch actuator are having a hard time opening the liftgate, liftgate will not latch properly when closing, or difficulty in opening even when pressing the switch at the door.
For power tailgate
Press the tailgate handle switch and tailgate close button at the same time for more than 3 seconds. (the chime will sound). Close the tailgate manually. Open the tailgate using the tailgate handle switch and allow it to fully open.
The Rear Liftgate Actuator motor is responsible for locking, unlocking, and opening the rear liftgate when you press the button on your SUV. The liftgate actuator incorporates a locking mechanism, electronic actuator, and switch to alert your SUV`s computer when the rear liftgate is open.
Check if there`s any debris like twigs, leaves or overgrown plants and bushes preventing the gate from closing. Debris and small items in your gate`s path can prevent it from working properly. If you have a cantilever gate, verify that the rollers and wheel bearings are well lubricated and aligned.
Manually pushing or pulling the liftgate may activate the system`s obstacle detection feature and stop the power operation or reverse its direction, replicate a strut failure, or damage mechanical components.
The settings in the vehicle information display can be reset back to the factory default. To reset the vehicle information display: Select “Factory Reset” using the scroll dial (1) and push it. Select “Yes” to return all settings back to default by pushing the scroll dial (1).
The fuses in the trunk protect electrical components such as the power seats, airbags and seat belt tensioners. Fuse pliers are provided on the inside of the fuse box cover to assist in removing and inserting fuses. There are also spaces for several extra fuses in the distribution box in the engine compartment.
The backup fuse protection is mainly used where the main protection of the adjacent circuit is unable to back up the main protection of the given circuit. The backup fuse helps us to control the maximum current in an electric circuit. The fuse wire melts and thereby breaks the continuity of a given electric circuit.
You can switch the power liftgate on or off through the vehicle settings on your touchscreen. When switched off, the liftgate only unlatches and will not power open or close.
The average cost for a Liftgate Lock Actuator Replacement is between $334 and $360. Labor costs are estimated between $67 and $85 while parts are priced between $267 and $275.
It is a piece of hydraulic (sometimes electric) equipment that installs on the rear of a truck which enables freight to be lifted from the ground to the height of the truck`s tailgate, or from the tailgate to the ground.
You can tighten up the screws or add longer screws that do a better job of grabbing into the wood. Gate hinges are strong but sometimes they can bend, especially under extreme weight. In some cases, the gate hinges may rust or bend. Replacing the hinges will fix this problem.
The easiest way to reinforce a gate is to attach a diagonal brace or tension rod connecting one of the hinges to the corner opposite. This equalizes the tension between each side of the gate.
However, a blown fuse is only one of several things that might prevent you from opening your trunk. A different electrical malfunction, a faulty latch, or a damaged keyfob can all result in a stuck trunk.
The most common cause would be an issue with the locking assembly but if the car is equipped with a switch to open the trunk that could also be an issue. A certified technician will be able to diagnose the issue with your trunk.
Symptoms of a Bad Trunk Lock Actuator
Automatic trunk pull-down doesn`t work. The trunk won`t open with a traditional key. The trunk makes a clicking sound but doesn`t open when the key fob or electronic release button is pressed.
If the electronic actuator has failed to open the nozzle ring assembly vanes under acceleration, the turbo will also fail to operate efficiently. If the vanes are set to a closed position, it can cause choking of the engine or overspeeding of the turbine.
The system or actuator filter is blocked or clogged. The actuator ports are plugged with contaminants. The speed controls are closed. There is too much condensation.
To test a linear actuator`s current draw, simply connect a multimeter in series with one of the leads of a powered linear actuator, and watch the amperage reading as you extend/retract the rod. Based on the reading, you can determine a power supply that will be able to handle that current draw.
To leave your car door open without seriously impacting your battery, you`ll need to look at the age of your car and its battery health. . To help prevent the draining, you can either get a new battery or remove your interior lights.
WARNING: Make sure that you fully close the liftgate to prevent exhaust fumes from entering your vehicle. If you are unable to fully close the liftgate, open the air vents or the windows to allow fresh air to enter your vehicle. Failure to follow this instruction could result in personal injury or death.
The lifting capacity of standard pickup liftgates ranges between 750lbs to 1500lbs. The general rule of thumb when selecting lifting capacity is to round up, and round up generously.
Relevant Questions and Answers :
the most relevant questions and answers related to your specific issue
Liftgate opens then bounces up and down then closes back. What causes this?
ANSWER : The rear door has built in sensors and power motors that work together to close the door automatically when you push the close button. If there is a shorted button then this could cause it to close again as soon as it is opened. I recommend keeping children and your hands away from the door until it is fixed. Make sure the inside controls on the display are set correctly by the owners manual to the rear door operation. I’d suggest you get this checked out by a qualified technician who can diagnose the issue with your lift gate and make the necessary repairs.
After closing, sunroof goes back to ventilation position
ANSWER : Hello! If the reset procedure does not work I suggest having a technician inspect the sunroof rails. The most likely cause will be the sun roof rails binding up. This issue has been reported by several Fiat owners already. Replacing the sunroof rails or cleaning and lubricating them will usually cause the sunroof to function as designed again.
If you decide to get this fixed, feel free to contact a professional mechanic who can assess the issue with your sunroof. A proper repair can then be done once a proper diagnostic performed.
Hi both of my doors of my 04 350z will not open from the outside but if window is open I can open from inside handle. Sounds elec
ANSWER : Hi there. It is possible that the problem with your doors is electrical, however, there are multiple individual components that make up the electric door locks, ranging from solenoids, to relays, fuses, control module and the door lock itself. Before receiving a price quote on what it would cost to fix it, it would first require an inspection to properly diagnose what is damaged and needs to be fixed. I would recommend having one of our professional mobile mechanics come to your location and complete a door will not open inspection first, so they can pinpoint the source of your issue and recommend the right repairs.
Can a blown head gasket cause a map controlled thermostat not to open?
ANSWER : Hi there. Although a blown head gasket can cause multiple systems to fail throughout the vehicle, is less than likely that it would impact the operation of the thermostat on the radiator. However, it is quite possible that when the original overheating issue that likely caused the head gasket failure occurred, several electrical harnesses or sensors that control and monitor these components may have been damaged. Coolant can overflow for many reasons, but typically it’s due to having coolant that is not thinned down to the recommended 50/50 ratio of coolant to distilled water when adding coolant to the radiator.
Sliding door won’t close with buttons
ANSWER : The doors have a safety sensor that will not allow the door to close when the sensor is indicating that the door is blocked. Another possibility is that the door slides are binding the door and the motor senses it then reverses it back open.
The system will need to be scanned with a scanner that can monitor the input and outputs of the body computer’s sensor. You will have to have it tested since it is a safety hazard to try and bypass the system.
You could try and open door all the way open and clean the door tracks out. Be sure to remove all of the dirt and debris that are in the tracks and lightly lube the tracks. If it still binds and reverses then have a certified mechanic test the system out. They will be able to diagnose the problem with your door and make the necessary repairs.
Sunroof won’t close all the way after opening in freezing weather
ANSWER : The sun roof mechanism is most likely getting, or has gotten, corroded or rusted. In this case, it would need to be replaced. The switch contacts are loosing contact and the switch should be replaced as well.
The recommended thing to do is have the entire sun roof assembly replaced. However, you can try lubricating the unit and cleaning out the tracks. If doesn’t fix it, replacing the motor may be needed along with the switch. A certified mechanic can help you by diagnosing the state of your sunroof and fixing it accordingly.
Automatic Trunk open/close feature not working but button lights up. I soldiered broken wires back together – reset?
ANSWER : Hello, thanks for writing in. Most of the time this is caused by a programming issue with the control module. It usually occurs if the module fails or if there is a loss of power. It can also occur if the batter is jumper improperly but most of the time you will have other issues also. If the battery was jumped correctly then I usually start by reprogramming the control module just to see if it will accept the programming. If it will not, then a new module will probably need to be installed and programmed to the vehicle. Not many places have the equipment to do this, so it is usually best left to the dealer where you got your car. I recommend having one of our certified automotive technicians from YourMechanic come to your home or office to inspect, diagnose, and repair the issue for you.
The driver side door wont open even though its unlocked what part do I need to get to fix the problem?
ANSWER : The drivers door inside panel will need to come off to reconnect the latch handle control arm. Sometimes the plastic clips that hold the rod on break and rod fall off and jams the door shut. The latch rod can be released by using a locksmith kit and lifting up on loose rod. Have a locksmith get the door open then a mechanic like one from YourMechanic can remove the door panel to get to and fix the broken clip or handle.
