Tesla just issued their biggest ever recall involving over 123,000 Model S cars. The automaker said they noticed excessive corrosion in power steering bolts, The Verge and Agence France Presse reported. They’re voluntarily recalling the cars and will retrofit impacted cars with a new part that will resolve the issue.

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Tesla recalled thousands of Model S cars built before April 2016. There haven’t been any crashes or injuries reported connected to the issue — in an email sent to customers, the automaker said this is a proactive move. According to Agence France Presse, the problem has only been observed in locations where salt is used on winter roads to melt ice or snow, but Tesla will retrofit all Model S cars containing the part. No other models are involved in this recall.

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Tesla’s email said, “If the bolts fail, the driver is still able to steer the car, 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.”

The company said if an owner hasn’t experienced issues, they don’t have to cease driving the cars, and that they would let owners know when retrofits, estimated to take around one hour, were available in their area.

The Verge said this is Tesla’s largest recall; in 2015 they recalled 90,000 Model S cars due to a faulty seat belt, and in 2017 they recalled 53,000 Model X and Model S vehicles because of a parking brake issue. The publication also noted the recall comes right as the company is getting ready to report quarterly deliveries — people will be watching to see how many Model 3 cars Tesla has delivered to customers this year.

Via The Verge and Agence France Presse

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