Q: Driver seat slight bump when braking

asked by on

I noticed a slight bump in the driver seat in my 2009 Sonata when braking. It's not severe, but noticable. I'm not sure if it's just a bolt that's not tightened perhaps? I see others have similar problems.

My car has an automatic transmission.

There are a few different possible causes for the seat to have some play in it. There could be a loose mounting bolt, a seat anchor that has separated from the floor, or the cause that I’m seeing quite a bit in my research, is a seat track that has worn/broken and is allowing the seat track to move up and down slightly. I would recommend that you first check all of the mounting hardware to be sure that it is tight, and that the anchors have not pulled away from the floor. If everything is tight and secure, you can have someone grab the seat by the backrest and try pushing and pulling on it, with medium force, to see if you can identify exactly where the play is coming from. If you are unable to identify the cause, or if you would like to have someone diagnose the problem for you, I would suggest consulting a certified mechanic, like those available at YourMechanic.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1,000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!
  1. Home
  2. Questions
  3. Driver seat slight bump when braking

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Intake leak in my engine.

Codes P0171 and P0174 are lean codes for bank 1 and bank 2 (both sides of the engine). Dozens of problems can cause these codes to set, from a vacuum leak to a clogged fuel injector. While the mass airflow...

Q: I have a 2012 Hyundai Sonata I just replace the brake light switch and my brake lights still stay on

You need to check the brake light switch contact rubber pad to see if it is worn out and not depressing the switch when you let off of the brake. The rubber pad wears out and will not depress the...

Q: My MDX has 107K miles, what major service is needed, if any?

There is no scheduled, or Acura recommended, 100,000 maintenance service interval for your vehicle. Instead, virtually all maintenance required for your vehicle is tracked by the vehicle computer (a "maintenance minder" system) and reported, using letter and number codes, via...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
How Much Does a Mechanic Make in Vermont?
Automotive technician jobs in Vermont have an average mechanic salary of $37k, with some mechanics earning a salary of $53k.
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.