Kleinn Air Horns RSFD21 Plug Play Remote Start for 2021-2023 Ford F-150 Auto

Vehicle Fitment

• 2021-2023 Ford F-150 (All Trims, Key-to-Start and Push-to-Start, Automatic Transmission Only)

Fitment Notes

• Compatible with both Key-to-Start and Push-to-Start ignition configurations on the 2021-2023 Ford F-150. Gas, Hybrid, and Diesel fuel types are all supported.
• Automatic transmission only - this kit is NOT compatible with manual transmission F-150s.
• Uses the factory OEM key fob for activation - press Lock three times (Lock, Unlock, Lock) to remote start. No additional remote fob is required.
• Module is pre-flashed for the 2021-2023 F-150 - no programmer or laptop required for installation or setup.
• Use Kleinn's fitment guide to confirm compatibility for your specific submodel and audio configuration before purchasing.
• Compatible optional upgrades (one per module): RFKIT1, RFKIT4, RFKIT2W, and MOBILE2W - for extended range or smartphone remote start capability. All sold separately.

Features

• True plug-and-play installation - no wires to cut or splice. The FORT21 T-harness plugs directly into the vehicle's existing connectors at the steering column, making this a straightforward DIY installation.
• Works with the factory key fob - no need to carry an extra remote. Activates by pressing the Lock button three times on your existing OEM transmitter.
• Pre-flashed module ships ready for your specific F-150 application - no programming tools, laptops, or dealer visits required for initial setup.
• 15-minute engine runtime per remote start cycle - provides ample time to pre-condition the cabin before entering.
• Compatible with gas, hybrid, and diesel F-150 variants - a single part number covers the full 2021-2023 model range.
• Expandable via optional RF or smartphone upgrade modules (RFKIT1, RFKIT4, RFKIT2W, MOBILE2W) for added range or app-based control - only one upgrade can be added per module at a time.
• Backed by Kleinn's 1-Year Limited Warranty.

Specifications

• Part Number: RSFD21
• Vehicle: 2021-2023 Ford F-150 (Key-to-Start and Push-to-Start)
• Transmission: Automatic Only (not compatible with manual)
• Fuel Type: Gas / Hybrid / Diesel
• Activation: Factory OEM Key Fob (Lock x 3)
• Installation Type: Plug & Play - No Wire Splicing Required
• Pre-Flashed: Yes - No Programmer Required
• Runtime Per Cycle: 15 Minutes
• Compatible Upgrades: RFKIT1, RFKIT4, RFKIT2W, MOBILE2W (sold separately, one at a time only)
• Voltage: 12V
• Shipping Weight: 1 lb
• Shipping Dimensions: 9" L x 7" W x 5" H
• Warranty: 1-Year Limited

Included Components

• 1x Pre-Flashed Remote Start Module (RSFD21)
• 1x FORT21 T-Harness (vehicle-specific plug-and-play wiring harness)

Product Description

The Kleinn RSFD21 is a vehicle-specific plug-and-play remote start kit engineered for the 2021-2023 Ford F-150 with Key-to-Start or Push-to-Start ignition and automatic transmission. The system activates using the factory OEM key fob - simply press Lock three times - eliminating the need to carry an additional remote. The included FORT21 T-harness connects directly to the vehicle's factory wiring connectors at the steering column with zero wire splicing, making this a genuine plug-and-play installation that most owners can complete without professional help.

The remote start module ships pre-flashed specifically for the 2021-2023 F-150, so no laptop, programmer, or dealer visit is required. Each remote start cycle runs for 15 minutes, giving the cabin time to reach a comfortable temperature before you climb in. Gas, hybrid, and diesel powertrains are all supported. For users who want extended range or smartphone activation, optional upgrade modules (RFKIT1, RFKIT4, RFKIT2W, MOBILE2W) are available separately - only one can be added to the module at a time. Backed by Kleinn's 1-Year Limited Warranty.