Model 3/Y: door check strap clicking — how to fix

Summary

On Model 3/Y a click/crunch can develop over time when opening or closing the door. The most common cause is the door check strap: dirt/dust got in, the grease dried out, or the plastic/friction inserts began to wear. In the early stage the unit can be revived by cleaning and lubrication; with persistent crunching or play the unit is replaced.

Symptoms

• 1–3 dry "clicks" at the same point in the door's travel.
• A "step" feeling as the door moves forward/backward.
• More pronounced in the cold.

Why it happens

Inside the check strap is a friction mechanism that holds the door in its detents. Dust/moisture/salt wash out the lubricant → binding and clicks appear. Over time the plastic/rubber elements wear down — at that point lubricant only helps briefly and replacement is required.

What to do step by step

1. Diagnosis: localize the sound; you do not need to remove the door card — it is enough to watch the check strap in the door opening.
2. Free: carefully wash the unit with clean alcohol/brake cleaner (not on the paint!), and after it dries apply a thin layer of silicone/teflon lubricant. Do not use thick, dust-collecting greases. There is no need to disassemble the door. Take a 13 mm wrench, loosen the nut that holds the check strap. Push the check strap down with force and tighten the nut in that position. Done. The check strap no longer clicks.
3. If it didn't help: replace the door check strap per the manual (see links below). The job is basic: undo the fasteners from the door opening and from the door card side, remove the unit, install the new one. Torque specs: the nuts on the door side — 10 N·m (10 mm socket), the bolt to the A-pillar — 24 N·m (13 mm socket) (see manual).

Note on parts: for Model 3/Y there are different part numbers for check straps depending on side/year (e.g. 1089507‑00‑D, 1110298‑00‑D, etc.). Verify the PN by VIN in the catalogs before ordering.

What it costs in Belarus

• $0 — cleaning/lubrication (DIY).
• $80–200 — check strap replacement (part + labor), depending on market/availability of used parts.

On which cars it applies

• Model 3 / Model Y, all regions (US/EU/CN), build years 2017+ (pre-refresh and refresh). Drivetrain/battery capacity does not matter.

Useful to know

• Don't "force" the door if the unit is binding — you can damage the hinges/door card.
• After winter washes, blow out the door opening and wipe the check strap dry — this extends its service life.

Links

• Door check strap removal/installation (Service Manual, Model 3):
  https://service.tesla.com/docs/Model3/ServiceManual/en-us/GUID-89BEB2F1-D70C-4DAC-9DB2-3A7BACC746F9.html
• Check strap seal removal/installation (Service Manual, Model 3):
  https://service.tesla.com/docs/Model3/ServiceManual/2024/en-us/GUID-7E81D3A9-CC5F-4C7B-B5FA-BCE5460C84CB.html
• Discussion of door check strap clicks (TMC):
  https://teslamotorsclub.com/tmc/threads/tesla-m3-passenger-door-check-strap-making-popping-noises-when-closing-and-opening.284876/
• Video: "Easy fix for Tesla door hinges / silence that noise" (general principles):
  https://www.youtube.com/watch?v=HEx3D3GlOzE