As Tesla tries to overcome the troubles faced by the Model 3, its Model S sedan has run into problems of its own. The EV carmaker announced a recall for 123,000 Model S vehicles that were produced prior to April 2016.

The recall is to fix power steering bolts that were reportedly observing excessive corrosion. According to Tesla, the issue was most commonly occurring in very cold climates where calcium or magnesium road salts were frequently used. Cars with the issue are still drivable, but reports say they’re increasingly harder to drive.

Here’s Tesla’s breakdown of the issue:

If the bolts fail, the driver is still able to steer the car, but increased force is required due to loss or reduction of power assist. This primarily makes the car harder to drive at low speeds and for parallel parking, but does not materially affect control at high speed, where only small steering wheel force is needed.

Tesla’s recall is only affecting the Model S. Those affected by the recall will be contacted by Tesla in a timely fashion to schedule an appointment to replace the faulty part.