Home › Guides › Tesla › Suspension
Why do Tesla suspension bolts and knuckles keep coming loose?
One pattern dominates: fasteners that were not properly tightened, letting a suspension link separate from what it bolts to. Two of the four are the identical defect — front suspension lateral link fasteners loosening from the sub-frame — once on 2020-2021 Model Y and 2019-2021 Model 3, and again on 2018-2019 Model 3. A third, the most severe here, covers 2020 Model Y vehicles whose front upper control arm bolts at the steering knuckle may not have been tightened, allowing the arm to detach. The fourth is a different failure in the same corner of the car: front and rear suspension knuckles on 2020-2022 Model Y that may fracture and let the suspension links separate. Model Y and early Model 3 carry nearly all of it.
Warning signs to watch for
- The car feeling unstable while driving, which the lateral link recalls describe when a link separates from the sub-frame
- Steering that goes away at a front wheel — the 2020 Model Y control arm notice says this can happen with no warning while you are driving
- A loss of control if a front or rear knuckle fractures and the suspension links separate
- None of these notices describes a dashboard warning or an advance alert you could rely on
Is it safe to keep driving?
None of the four carries a stop-driving or park-outside order from Tesla or NHTSA, but this is the group where waiting makes the least sense — every notice pushes for speed. The 2020 Model Y control arm recall is the most severe: a detaching suspension arm can take your steering away with no warning. The two lateral link recalls warn the car could become unstable, and the knuckle recall warns of losing control. You may keep driving, but book the inspection without delay rather than putting it off.
What the free repair involves
All four are service-center jobs with no software involved. Tesla inspects and tightens the front upper control arm bolts on 2020 Model Y; tightens or replaces the front lateral link fasteners on the affected Model 3 and Model Y; and inspects and replaces the front and rear knuckles where they may fracture. Every inspection and part is free of charge.
Severity at a glance
| Severity | Recalls |
|---|---|
| critical | 1 |
| high | 3 |
Models affected most
Every recall in this group
| Date | Recall | Severity |
|---|---|---|
| 2023-03-31 | Tesla Model 3 front suspension bolts can come loose | high |
| 2021-11-21 | Tesla Model Y suspension parts can break apart | high |
| 2021-10-25 | Tesla Model 3 and Y front suspension bolts may loosen | high |
| 2020-11-17 | Tesla Model Y loose bolts can detach suspension arm | critical |
Common questions
Why are there two separate lateral link recalls?
They cover different build ranges of the same defect. The 2021 recall covers 2020-2021 Model Y and 2019-2021 Model 3; a second one in 2023 added 2018-2019 Model 3. The remedy is identical: tighten or replace the lateral link fasteners.
Is the knuckle recall the same thing as the loose bolts?
No. Loose fasteners are an assembly problem — the bolts simply were not tightened. On 2020-2022 Model Y the knuckles themselves may fracture, so Tesla inspects and replaces the front and rear knuckles rather than retightening anything.
My 2020 Model Y drives fine — can the inspection wait?
The 2020 Model Y control arm recall is the most serious here, because a suspension part coming apart can take away your steering with no warning while driving. Nothing you feel today rules it out, so get the free inspection as soon as you can.
A recall applies only to specific vehicles. Check your 17-character VIN at nhtsa.gov/recalls.