Upgrade: HomeLink and rolling-code gates, working options

Why it doesn't work

Many modern gate openers use a rolling code and/or frequencies/protocols that are not fully compatible with your version of HomeLink (different markets/frequencies 315/390/433/868 MHz). The car "learns" but the opener doesn't accept the command.

Solution options

1. External universal receiver (for your region/frequency), wired into the gate opener's "button" terminals.
   • Program HomeLink to this receiver, which already correctly "closes" the control input.
   • Cost: $30–120. Look for compatible models from Chamberlain/LiftMaster, Nice, Hörmann etc.
2. Wi-Fi gateway/cloud (for example MyQ, Shelly, Meross).
   • Gate control from the phone / automation, with HomeLink kept as a backup. Direct compatibility with Tesla varies, so usually use App/Shortcuts instead.
   • Cost: $20–100.
3. Wired control input: run the button to a convenient location (or a "dry contact" from a smart-home relay).
   • The most compatible option, but without the "wireless magic".

Notes by market

• Make sure the device is for your region/frequency (EU: 433/868 MHz; US: 315/390 MHz).
• On Model 3/Y, HomeLink is an option (recent years): you need a module with installation.

Cost

$20–200 depending on the option chosen (receiver/gateway/installation).

Links

• HomeLink compatibility by brand/model: https://homelink.com/
• Tesla support for HomeLink: https://www.tesla.com/support/homelink-faq
• Chamberlain/LiftMaster support: https://support.chamberlaingroup.com/s/
• Example HomeLink installation on Model 3: https://tff-forum.de/t/homelink-empfaenger-nachgeruestet-schellenberg-drive/127884