How do you repair the passenger seat slider mechanism?

The seat fails to lock, it will slide unless I manually push the lever to move the seat into a locked position

My car has 42000 miles.
My car has an automatic transmission.

Experienced mechanics share their insights in answering this question :
The seat slider mechanism could be rusty or stuck do to the spring being broken or missing. You will have to remove the seat and check the track with the seat upside down. This will help you determine what is missing or damaged on the seat track. If you need further assistance with your passenger seat, then seek out a professional, such as one from Your Mechanic, to help you.

How to Identify and Fix Common car Problems ?

Our sources include academic articles, blog posts, and personal essays from experienced mechanics :

A seat slider on an office chair is a lever which allows you to adjust the distance between your seat and the back of the office chair. Maintaining good posture whilst sitting at a workstation is very important to prevent damage to spinal structures, back pains and muscle strains.
Seat Adjustment Lever Broken

First, try jiggling the lever. Sometimes the mechanism just needs a little nudge to get it moving again. If that doesn`t work, try gently prying up on the lever with a screwdriver. Be careful not to damage the plastic around the lever.

Gas cylinders, or pneumatic cylinders, are devices that take the pressured power of compressed gas and force it through a chamber which then moves a piston in the required location. This movement and force enable the office chairs` seats to rise or lower down.
If the power seats in your car aren`t working, you may be able to move them with a winder tool. The winder looks like a cable with a handle on one end and a screwdriver-like bit on the other. Insert the bit into the matching socket on the bottom of the seat and spin the handle to move the seat backward and forward.
If your car seat won`t move back and forth, there are a few possible explanations. The most likely cause is that the seat tracks are dirty or blocked. Another possibility is that the seat motor is damaged. In either case, you`ll need to take your car to a mechanic for diagnosis and repair.
If cracks have worn down the seat to nothing, especially on the curvature of the seat, it might have to be restitched and replaced. There are limitations of what you can do with products designed to repair small cracks, but these can still be smoothed out using fillers and painted to make it fit in.
Blown fuse, worn gears or stretched cables

A blown fuse, cables that have been stretched or wrapped around the seat mechanisms, and alignment issues with the gears can all cause the power seat to malfunction.

It sounds like the adjuster motor is failing, seat track is binding, or the switch has failed. Check for power and ground to the motor while using the switch; if they are available upon command, then the motor is faulty and in need of replacement.
While holding the adjustment lever, press firmly on the seat in the direction you want it to move. If you`re lucky, you`ll be able to muscle the seat into your desired position. Keep in mind that you may do further damage to the power seat`s motor and mechanism this way.
Glides are those often-invisible bits at the bottom of chair legs that provide protection for the chair leg and, probably more importantly, the floor below them.
Seat adjustment type is the type of adjustment control for the seats: manual, power or power-with-memory.
The entire seating is supported firmly and attached to the bottom bodywork of the vehicle through the linkage assembly called the seat rails. Seat rails are adjustable in their longitudinal motion which plays an important role in giving the passengers enough leg room to make them feel comfortable.

Relevant Questions and Answers :

the most relevant questions and answers related to your specific issue

Nissan altima 2013 rear seat latch is broken and I cannot fold down the seat. How do I repair the broken seat latch? What should I
ANSWER : Hello, thank you for writing in. Correcting the issue will involve finding out what the exact issue is first. The latch has a handle that is pulled to release it. If the handle is broken, and you cannot release the latch, you will need to replace the handle. They typically screw or bolt on with ease. If the latch itself is broken, then you will have to manually release the latch with a screw driver or other means first before replacing the entire latch unit. For more help with the repair, contact our service department to schedule an appointment.

How do you repair the passenger seat slider mechanism?
ANSWER : The seat slider mechanism could be rusty or stuck do to the spring being broken or missing. You will have to remove the seat and check the track with the seat upside down. This will help you determine what is missing or damaged on the seat track. If you need further assistance with your passenger seat, then seek out a professional, such as one from Your Mechanic, to help you.

Passenger seat heater not working properly.
ANSWER : Hello and thank you for contacting YourMechanic. The book says that you can use a 15, 20, 25, or 30 amp fuse. The power to the heaters are operated through the wiring to the main harness. There could have been a wire tied into it to make the seat work on the same circuit as the driver seat. This is common to find in the vehicles.

You can try putting a 15 amp fuse in the slot and see if the seat works. Try to avoid using a high amp fuse for if there is a problem with the heater you don’t want to burn it. If nothing seems to work, then the heater in the seat has failed and needs replaced.

If you need further assistance troubleshooting your vehicle, then seek out a technician, such as one from Your Mechanic, that can assist you with a seat inspection at your home or office. Best of luck.

How do you reset the seat belt light on a 2006 Murano?
ANSWER : You will need to have your body computer scanned to get the codes from the seat belt module. If may have stored the code due to the battery was not disconnected when seat was removed causing the system to see problems in seat circuits. You may just have to have the codes cleared and if no problem codes return the you will be okay.

Water under passenger seat and mildew problem
ANSWER : If the A/C evaporator drain is clogged or partly clogged, then the water condensation from the normal A/C operation cannot drain out of the evaporator case and has to go somewhere. The place it usually goes is out of is the floor vents. Have the A/C evaporator drain checked and cleaned out. Try to not park under trees that shed the leaves and seeds in the future. This is what clogs the drain. As for the mildew, there are several methods listed in this article for maintaining car upholstery after liquid damage.

2011 Chevrolet Camaro"Driver side power seat"…..Seat back won’t come up. Dealer says its over $4,000.
ANSWER : Without knowing what the actual problem is, it would be difficult to say which estimate is accurate. It is quite a price difference. The problem can be caused by a faulty electric motor, which may be a few hundred dollars to replace, or possible a broken seat frame or drive mechanism, which can cost much more One of our mobile technicians can come to you and check into why the seat is not working and give you a diagnosis and/or estimate for repairs.

Car Seat and Seat Belt Issue
ANSWER : You may have open recalls for the seat belts on your vehicle. I would call the local dealer to verify open recalls for the seat belts and repair for them may be free of charge. The seat being broken is most likely not repairable and need to replace the seat.

Seat problem, seems like a quaity issue
ANSWER : I do understand having to let passengers enter the back seats through your driver’s door can be extremely inconvenient and very frustrating. The good news is that this issue can be easily corrected.

From what you mentioned, it sounds like only the passenger seat back lever handle is broken. If so, that means the rod is still there and you only need a new handle.

You can start by confirming that the rod is still connected and if you pull the rod the seat back will fold as designed. If so, you can either buy the new handle from the Ford dealer (which would be the same kind that is breaking) or buy a set online which has options for a aluminum type handle that is a bit longer for better grip and strength.

If the rod is not working correctly, an inspection should be done to the seat back to see if it can be repaired or if the seat back unit needs to be replaced. Most of the time, the problem is only the handle and not the rod.

A certified mechanic, such as one from YourMechanic, can diagnose the handle situation and make sure the repair is quick and thorough.