The Tesla Model Y L has been available in the market for slightly over a year now. Lately, a number of owners have raised concerns about a recurring problem—the rear end of the vehicle sinking. The specific manifestations of this issue encompass a diminished gap between the rear wheels and the wheel arches, a stiffer suspension system, frequent instances of the vehicle bottoming out when traversing bumps, noticeable body sway or deviation from the intended path, a more pronounced sinking sensation when the vehicle is fully loaded or after extended journeys, an elevated risk of the chassis scraping against surfaces, and uneven wear on the inner sidewalls of the tires.

In response to these complaints, Tesla service centers have opted to replace the rear suspension springs on certain affected vehicles. Some owners have reported an enhancement in driving performance post-repair. Nevertheless, there have been reports from other owners indicating a resurgence of the problem merely a few months after the springs were replaced with upgraded versions. The original part number for the rear suspension spring is 2188477-00-A, whereas the replacement part bears the number 2188477-00-B. At present, there is a lack of publicly available information elucidating the precise modifications made between the two versions and their direct correlation to the fault at hand. Tesla's after-sales service has established specific criteria for spring replacement, stipulating that replacement is warranted only if the ground clearance of the rear wheel arch falls below 764mm.