How to Fix Power Seats in Cars

by Contributing Writer; Updated June 12, 2017

Sometimes it can be difficult to determine where your problem is since the power seats have many functions related to only two buttons. Use the following tips to check the functionality of all the features of the heated power seats and diagnose the problem.

Under The Hood:

 How to Fix Power Seats in a Dodge Durango

Confirm the problem. Shift your weight around from side to side on the seat. Listen for a creaking noise coming from the outboard front attachment area.

Use a screwdriver to take off the outboard power seat track cover by unscrewing the Phillips head screws and unsnapping the cover over it.

Locate the M8 attaching bolts and remove them, too. Leave the two bolts at the rear. Pick up the outboard seat track foot about half an inch to find the locater pin. You may make the opening as much as 1 inch but no bigger.

Lubricate the area around the pin with a special lubricant. This lubricant is available as Part number 04318066.

Put the power seat's outboard foot locating pin in the locating hole's center, making sure not to touch metal surfaces. If you have trouble doing this, you may need to unscrew the rear power seat track attaching bolts so that the locating hole can accommodate the locater pin.

Use the front M8 attaching bolts to secure the power seat track. Torque all the front and back fasteners to 27 Nm (20 foot pounds) with a torque wrench. Reattach the power seat track covers.

Verify that the repairs have fixed the problem by undergoing the diagnoses procedure and finding no squeaking, shifting or creaking. Repeat the process if the squeak persists.

Items you will need

  • Screwdriver

  • Lubricant

  • Torque wrench

 How to Fix Power Seats in a Dodge Caravan

Notice a rocking of the power seat as you break or accelerate your car while driving in traffic. Rocking will advise you of a loose power seat adjuster.

Order a drive block screw for your car's power seat. Mention Part Number 05080982AA. Make sure you have a T-50 Torx Bit and a torque wrench on hand to perform the repairs, as well.

Hoist the vehicle. Open the hood. Disconnect and isolate the negative battery cable. Disassemble the screws for the memory seat and mirror control module to the seat track if you are repairing the driver's seat. Leave the wires connected.

Remove the four nuts underneath the car that that connect the power seat risers to the car floor. Reverse the hoist by lowering your car. Raise the power seat over its track mount. Lay the back of the seat against the floor so that you have access to the power seat's track.

Use the torque wrench to unscrew the drive block screw from the lower track assembly. Look for the screw on the inboard side or the seat belt buckle side. Replace the screw with your new drive block screw and torque it to 28 Nm or 250 foot pounds.

Replace the seat. Hoist the vehicle again. Reinstall the required nuts that attach it to the floor to 60 Nm or 44 foot pounds.

Lower your vehicle one final time. Reconnect the negative battery cable to restore functionality and make sure that your memory seat and mirror control module is screwed in again and working.

 How to Fix Power Seats in a Dodge Ram

Order lubricant for your power seat track, Part Number 0501714AA.

Make sure that the rear and front vertical track seat adjusters work by testing them out. It's likely that either the rear or front vertical track seat adjuster is stuck.

Identify which vertical track seat adjuster is not working. Unscrew the bolts under the seat that connect the seat's frame to the mounting brackets. Lift and set aside the cushion but don't disconnect the wire harness.

Find the affected vertical track seat adjuster. Pick up the outboard end of the motor about ΒΌ inch. Wait until you hear a pop. This pop signals that you have remedied the stuck condition. Change the location of the seat adjuster by using the adjustment switch.

Wipe excess, old lubricant from the lead screws found on the front and rear seat tracks. Switch the motor on and off in both directions and keep wiping so that you get all of the lubricant.

Apply a thing coating of your new lubricant to the lead screws so the fore and aft drive nut is coated. Move the seat adjuster with the switch so that the lubricant can evenly distribute. Clean off any excess lubricant from surrounding areas.

Replace the seat cushion. Reinstall the bolts into the mounting brackets and tighten them to 25 Nm or 18 foot pounds.

 How to Fix Power Seats in a Pontiac Grand Prix

Position the seat so that it can't go forward any further.

Take the J-hook off of the seat back cover's bottom. Remove the head restraint and the retainers.

Flip up half of the cover. Locate the seat back pad. Unhook the hook and loop retainers found on it.

Remove the entire seat back cover. Simply pull the seat cover up in a quick and clean motion over the pad. Make sure you are only removing the seat back cover and not the foam pad. Expose the seat frame back foam pad and remove it from the seat frame. If necessary, unplug wiring for your heated seats before you do this.

Install a new side bolster pad into the seat frame and a new seat back foam pad. Immediately after doing this, reinstall any heated seat wiring you may have disconnected in the previous step.

Put on the new seat back cover, flip the cover about a third of the way down and reinstall the head restraint retainers and head restraint before pulling the cover all the way down. Put the J-Hook back on the seat back cover's bottom.

Items you will need

  • Side bolster pad

  • Seat back foam pad

  • Seat back cover

 How to Fix Power Seats in a Jeep Grand Cherokee

Order Part Number 04318066AB. The part is called "Spray White Lube Lithium Grease."

Adjust the seat using the power switches to raise the seat cushion until it can't raise anymore. Verify that you have access to the front and rear pivots.

Put lubricant between each spring washer's backside and on the rail of the seat frame. Make sure that all touching surfaces or surfaces that are designed for future contact are lubricated. Lubricate the washers on every corner of your power seat's frame.

Lubricate the pivot shaft and the seat rail frame. Pay special attention to the areas designed to touch.

Use the power switch to move the seat backwards, forwards, up and down so that the lubricant evenly distributes throughout the parts.

Repeat all of these steps again on the same seat. Repeating the steps ensures that you have applied enough lubricant.

Wipe away excess lubricant from the power seat or its mechanical parts. Use your seat like normal.

 How to Fix Power Seats in a Cadillac Escalade

Verify that there's a problem with logic lockup. Hook up a Tech 2 diagnostic tool to your vehicle. Move the seat and note the data on the Tech 2. Non-changing data points to a logic lockup.

Locate the instrument panel relay block below the instrument panel's left side near the parking brake. Remove the seat circuit breaker. You will have to do this regardless of whether you are fixing the driver's or passenger's seat.

Make sure that the circuit breaker isn't open. Wait half a minute and reinstall the circuit breaker if it's not open.

Attempt to adjust the seat.

Watch the seat move to your preferred location. Verify the data changes on the Tech 2.

Refer to the diagnostic procedures provided in a service manual to identify the problem if it is not solved with these steps. You may have to replace the Memory Seat Control Module.

 How to Fix Power Seats in a Nissan Altima

Lay protective covers over upholstery, carpeting and anything else that may be damaged during your repairs.

Jot down your radio station presets and disconnect the negative battery cable. Stand by for 4 minutes.

Take off the two bolts securing the front of your driver's seat to the floor. When you're done, take off the rail finishers and the two bolts that hold down the rear of your driver's seat.

Tilt the seat back backwards so that you have access to the bottom of the seat.

Discard the faulty, worn or broken space washer. You may find this space washer on the seat's floor somewhere.

Insert a new space washer and lock it down into position.

Replace the seat. Ensure that any wires under the seat have not accidentally crossed and that the four mounting bolts are torqued to 32 to 40 foot pounds. Connect the negative battery cable, ensure that the power seat controls function and verify that the problem has been solved.

Items you will need

  • Protective covers

  • Space washer

  • Torque wrench

 How to Fix Power Seats in a Nissan Maxima

Lift the front edge of the seat bottom by using the regular power seat switch. Take voltage readings of the seat slide motor.

Verify that the voltage to the seat slide motor on the harness side between "BR" and "W/B" is 12v when the power seat's switch is pressed backwards and forwards. Jot down your radio presets and tap the seat slide motor so that the motor will work long enough to give you access to the seat mounting bolts.

Pull the seat as forward as it will go. Take off the two M10 rear seat mounting bolts and set them aside. Push the seat as far back as it will go. Take off the two M10 front seat mounting bolts. Switch the ignition so that it marks "OFF." Unplug the negative battery cable. Stand by for 4 minutes. Raise the seat assembly to find the harness-to-seat connectors. Disconnect them.

Take out the entire seat assembly and place it on a dry, clean, flat surface. Position it so you can access the bottom of the seat. Undo the seat bottom's carpet flap and take out the four M8 bolts. Then, take out the top screws from the right hand and left hand side finishers. Unplug the seat sub-harness connector.

Put both the seat rails back into their rear position and take out the worm gears, motor, flexible wire and gear boxes all at the same time. Take out the flexible wire from the gear boxes using a screwdriver. Verify that the new seat track mounting tab makes contact with the rear stopper and that the threaded shaft facing up is point upwards.

Install six new rubber grommets. Place the new worm gears, flexible wire and gear boxes into the frame. Reposition the seat tracks over the seat track mounting tabs. Use your hand to tighten the M6 bolts securing the seat track mounting tabs. Torque the six base plate nuts securing the gear boxes to 64 to 85 inch pounds (7.17 to 9.69 Nm) and the M8 bolts on the seat's front edge to 13 to 17 foot pounds (17.5 to 23.7 Nm).

Plug the slide motor connector back in and hook the carpet flap's strap. Reinstall the seat assembly and reconnect the electrical connectors and negative battery cable. Torque the mounting bolts to 27 to 36 foot pounds (37 to 49 Nm). Operate the seat to make sure that the problem has been resolved.

Items you will need

  • Voltage reader

  • Screwdriver

  • Rubber grommets

  • Gear boxes

  • Flexible wire

  • Motor

  • Worm gears

  • Torque wrench

 How to Fix Power Seats in a Honda Accord

Verify that you have a problem. Put your seat in the midpoint position by using the horizontal switch located on the side of the seat. Adjust the seat with the front and back ends of the switch. Lie back into the seat and shift your weight from side to side. If the seat moves with your motions, continue to the next step.

Order Shims. Indicate Part Number 81599-S84-999 and H/C 7325301. A total of eight shims are needed.

Position the seat's bottom so that it's fully vertical. Move the seat forward as much as you can.

Loosen the four inboard T-30 bolts located at the rear of the seat with a few turns.

Install shims where you see clearance in the linkage. You may install up to four shims per side on one or both sides of the seat base linkage. Move the seat back and forth to help you determine if you've installed enough shims.

Torque the Torx bolts to Nm or 7.4 foot pounds when you're done.

Reposition the seat into the midnight position. Repeat the test for looseness to determine if you've solved the problem.

 How to Fix Power Seats in a Ford Explorer

Order the Seat Service Clip, Part Number 3L2Z-78618D46-AA.

Position the seat so that you can freely access all four bolts.

Depower the Supplemental Restraint System (SRS). This has to be done before doing the repair.

Unscrew the four covers of the seat track bolts so that you have access to the bolts. Remove the bolts.

Disconnect the electrical connectors of the seats. Pick up the seat until you can see the bottom of the seat track.

Install a seat track clip on the track assembly's right side and make sure that the tabs are positioned to the seat's front. Install another seat track clip on the track assembly's left side so that the tabs are positioned towards the seat.

Replace the seat into its original position. When you're done, reinstall the electrical connectors. Screw the four seat track bolt covers back onto the bolts. Turn the SRS back on.

 How to Fix Power Seats in a Chrysler Sebring

Lean into the backseat of the car behind the driver's seat. Shine a flashlight underneath the driver's seat and use a mirror to inspect the horizontal fore/aft adjuster screws. These screws can be identified as the long and horizontally placed screws underneath the seat.

Remove the power seat by loosening and removing the bolts that keep it connected to the floor.

Use a clean, wire brush to clean any mechanism that appears oxidized. Toggle the seat adjuster switch in both directions to clean all visible and non-visible parts. Toggling will also help you determine if the cleaning has restored full functionality.

Use a generous amount of grease to coat the adjuster screw mechanisms. For best results, use the official grease that is meant to be used with Chrysler Sebring repairs--Part Number 05017414AA.

Turn the adjuster seat switch on and off. Try all of its functions to make sure that they're all operational.

Replace the vehicle seat. Make sure the fasteners are torqued to 61 Nm (45 foot pounds) to ensure that the power seat will work optimally.

 How to Fix Power Seats in a Chevy Avalanche

Put the key in the ignition, turn it and make sure that the engine is running.

Locate the two buttons on the door that indicate the heated power seat operation.

Know that the RH button will heat all of the seat, both the cushion and back. The LH button only makes the seat's back hot. To tell how hot the seats are, you can check the three light bar indicators.

Inspect the functionality of the seat's back and seat's cushion. Press the RH button once and find that the three light bars tell you that the seat is heated on high. Tap the button one more time. Look for a medium heating setting indicated. Push the button again and have the bars indicate the lowest heat setting. Turn off the heat by pressing the button a fourth time.

Test the seat's back by pressing the LH button. Find that the light indicates that only the seat's back is heated. The three lights will indicate that the seat is heated to its highest possible temperature. Tap the button again so that the power seat's back will be heated to medium and show only two bars. Press the button again and find the heat at its lowest setting with only one bar showing. Push the button again so that the heat turns off.

Tap your switches if you find a problem in any one. Small bumps have been known to affect their functionality. Give them light taps to see if it restores functionality.

Change your seat heater resistance to 1.5 to 5.5 ohms. This is an updated range and can solve your power seat problems. Make sure to keep the values between this range to avoid future problems.

 How to Fix Power Seats in a Ford Mustang

Purchase the Seat Shim Kit 1R3Z-63000A25-AB.

Remove the passenger seat. Then remove the backrest and latch.

Unscrew the latch's two bolts and throw away the lower bolt.

Screw in four of the provided 1.5 mm washers that came with the kit. Put them between the bracket of the seat's backrest and the cushion frame's bottom.

Install the other four 1.5mm washers between the backrest latch and the seat's backrest frame where the upper bolt used to be.

Put three 2mm washers between the backrest's latch and frame where the lower bolt used to be.

Reinstall the seat backrest latch with the kit-provided bolt. Put it in the lower hole. Replace the seat. Push the seat as far towards the center console as it will go before attaching and tightening the seat to the floor. Make sure the seat does not touch the door panel or any other affected areas before putting up your supplies and using your seat as usual.

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