What is the reason for the electric seat backrest not being able to rise?

[LeDavid]

Electric seat stuck or jammed. Below is relevant information about electric seats: 1. Working principle: Electric seat adjustment can be understood as completing adjustment actions through motors by means of control buttons, etc. The adjustment of seat direction is based on three adjustment mechanisms: seat recliner, seat rail, and seat lifting mechanism. Each mechanism can provide adjustment in two or more directions respectively. The more adjustment directions the seat has, the better the driver can find a suitable driving posture and reduce driving fatigue. 2. Function: To provide the driver and passengers with an easy-to-operate, comfortable, and safe driving position.

[MacBrayden]

I helped a friend fix this issue last time, and you need to check these aspects: The most common problem is a burnt motor, especially for those who frequently adjust the seat. An overheated motor can melt the fuse. Gear jamming is also a frequent issue—coins or snack crumbs falling into the guide rail can jam the drive shaft. The most troublesome is water damage to the control module, like spilled milk tea seeping into the seat gaps, causing a short circuit on the motherboard and immediate failure. If you hear a clicking sound when pressing the button but the backrest doesn’t move at all, it’s likely a broken gear tooth. For self-inspection, first check the fuse box near your feet. Pull out the 15-amp fuse labeled 'SEAT' and take a look. Oh, and if you smell burning while adjusting, stop immediately—that’s a sign the motor coil is melting.

[Polly]

I've encountered this issue twice. The first time was when my son spilled cola into the crevice of the passenger seat, causing the motor to rust and seize due to moisture. The second time was even more bizarre—the seatbelt buckle got stuck in the recliner mechanism, forcefully tugging every time the seat leaned back. Try this: press the adjustment button and listen closely; if you hear a humming sound, it means the motor is running but stuck, while no sound likely indicates a wiring issue. Focus on checking the wiring harness connectors under the seat—they can loosen over time due to vibrations. The worst part about dealerships is they often push for a full assembly replacement, when in reality, you can buy the same model motor on Taobao for just over a hundred bucks. Just remember not to tamper with the memory module for the backrest—resetting that requires professional equipment.

[Ken]

Three core causes of electric backrest failure: power system (motor/gear set), control system (switch/module), and transmission system (wiring/fuse). Follow these four diagnostic steps: 1. Repeatedly press the switch to listen for motor operation; 2. Check the 15A seat fuse under the steering wheel; 3. Use a phone flashlight to inspect wiring along the inner seat rail for pinch marks; 4. Test other adjustment directions to verify single-direction failure. Pay special attention to models with memory function—system misjudgment of position may cause locking; press and hold SET + direction button to reset. If plastic burning odor is detected, immediately stop operation to prevent wire harness melting.

[VanMiranda]

I've seen this issue countless times at the repair shop. It's especially common in summer – the grease in the rails turns into asphalt-like substance under high heat, causing the gears to seize up like they're glued. Here's a lesser-known fact: even slight body deformation can cause this, such as frequently driving over curbs on one side, which twists the seat base plate and misaligns the motor gears. Try this DIY trick: firmly tap the seam area of the backrest while pressing the button – if it moves, it means foreign objects are jamming the gears. Be extra cautious with aftermarket seat modifications, as non-OEM motors often lack sufficient power and may burn out after a few forced operations. Last time, we found an entire pack of tissues inside a gearbox – hilarious.

[IsabelaMarie]

Stuck and panicking? Check two lifesaving spots first: the manual emergency release on the side of the seat (use a coin to pry open the cover for mechanical unlocking), and the spare fuse box under the front passenger footwell. Most cases are minor—wires chewed by rodents or switches broken by parking attendants forcing seatbacks. Shine your phone’s flashlight under the seat to inspect flat wires; if bitten, wrap them temporarily with electrical tape. Remember: Never lean your full weight when adjusting the seatback—the motor isn’t gym equipment. If you smell burning from the rear seats, disconnect the battery negative terminal immediately! For safer driving, use the reading light instead of reclining.