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Power Seat Motor Replacement
What is a Power Seat Motor?
The shape and position of the power seats in a car, truck, or SUV can be custom tailored at the push of a button for maximum comfort. The power seats are adjusted with a number of small motors inside the seat that are activated when the operator presses a control switch. These power seat motors may control forward, backward, up, down, tilt, lumbar support, and even headrest adjustments. The motors are usually activated by a number of relays that respond to signals from the power seat switches.
How does a Power Seat Motor work?
The power seat motors are connected to the metal seat frame that forms the skeletal system of the seat. When one of the power seat switches is pressed, a signal is sent to trigger a relay that enables power to a seat motor. Working together, the seat motors move the seat bottom, backrest, and headrest along multiple axes to allow for a custom fit for the occupant. In many vehicles, the position settings can be saved and recalled to accommodate multiple occupants.
What are the symptoms of a bad Power Seat Motor?
A power seat is designed to move in many directions. Each seat motor moves a section of the seat frame along a specific axis (up and down, forward and backward, diagonally). If the power seat is operational but does not move in a specific direction when one of the switches is pressed, a power seat motor may be at fault. If a power seat does not move at all, the problem likely originates from somewhere other than a bad seat motor.
Can I drive with a bad Power Seat Motor?
If the cause of a faulty power seat is a short circuit in the wiring - or the problem leads to a dead battery (requiring reset and relearning of vehicle systems) - immediate attention should be given to the problem. The vehicle should be driven as little as possible. If a bad seat motor prevents a seat from functioning properly, the seat may not be able to adjust properly, leaving the driver in a compromised position while driving. The condition should be resolved as soon as is reasonable. Improper seat position relative to the controls and to the airbags, and improper headrest adjustment are safety concerns for both the driver and the passenger.
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Jeep Grand Cherokee Power Seat Motor Replacement Cost by Year
The average cost for a Jeep Grand Cherokee Power Seat Motor Replacement is between $409 and $470 but can vary from car to car.
Power seat components are intended to last the lifetime of a vehicle and have no regular replacement interval. A power seat motor may wear out over time. Damage can occur to wiring or a control module mounted under the seat, especially if water is allowed to pool on the floor, such as may occur in a flood.
How are Power Seat Motors diagnosed?
To check for a bad power seat motor, a technician will first make sure that a fuse has not blown. A blown fuse can be either the cause of an inoperative power seat or a symptom. It is unlikely that all of the seat motors will stop working at the same time. If the seat will not move along one axis when a switch is pressed, but works in all other directions, the technician will check for power to the switch and to the relay (more common causes of an inoperative seat function) before checking the seat motor itself. If voltage is present at the switch and at the relay, the technician will test the motor to make sure it is receiving voltage. If it has power but will not operate, the motor is likely to be defective. In some cases, the problem might originate in the seat control module or in the Body Control Module. In these cases, the technician will look for a diagnostic trouble code (a fault code) that can be read with a scan tool.
How are Power Seat Motors replaced?
If a power seat motor is the cause of a malfunctioning seat, a technician will move the seat to expose and remove the nuts or bolts that hold the seat in place. This can be difficult if the seat malfunction prevents the seat from moving forward and backward, preventing access to the fasteners. With the seat detached from the floor, the technician will disconnect the battery, tip the seat up to access the power seat electrical connections, and unplug the wire connections. Once the seat is completely disconnected it is carefully removed from the vehicle. Depending on the location of the faulty seat motor, the seat may need to be disassembled (seat back and base separated and seat cover removed) in order to replace the motor. With the new motor in place, the technician will apply power to the circuit and test the new motor before reinstalling the seat in the vehicle.
RepairPal Recommendations for Power Seat Motor issues
Because the front seats are an integral component of vehicle safety, RepairPal recommends that any disassembly of the power seat be left to a professional technician.
What to look out for when dealing with Power Seat Motor issues
Some vehicles incorporate Supplemental Restraint System (SRS) features into the seat, such as seat-mounted airbags and/or seatbelt pretensioners. Care is needed to avoid damage to the wires for the SRS and other components located in the seats. The SRS may need to be reset with a special scan tool after the seat is disconnected.
Can I replace the Power Seat Motor myself?
If replacement of a power seat motor requires that the seat be disassembled for access to the motor, the job should be left to a qualified repair professional. The integrity of the seat is essential to occupant safety in the case of a rear end crash.