Lexus does not recommend towing a trailer with your vehicle. Lexus also does not recommend the installation of a tow hitch or the use of a tow hitch carrier for a wheelchair, scooter, bicycle, etc. Your vehicle is not designed for trailer towing or for the use of tow hitch mounted carriers.

Dinghy towing
Your vehicle is not designed to be dinghy towed (with 4 wheels on the ground) behind a motor home.

NOTICE
■ To avoid serious damage to your vehicle Do not tow your vehicle with the four wheels on the ground.
■ To prevent causing serious damage to the hybrid transmission and Hybrid AWD system Never tow this vehicle with any of the wheels on the ground. This may cause serious damage to the hybrid transmission and AWD system.

Trailer towing (vehicles
with towing package)Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Shift Lever: On-vehicle Inspection
ON-VEHICLE INSPECTION PROCEDURE 1. SECURE VEHICLE (a) Fully apply the parking brake and chock a wheel. CAUTION:
Make sure to apply the parking brake and chock a wheel before performing this procedure.
If the vehicle is not secure and the shift lever is moved to N, the vehicle may suddenly move, ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Can Communication System: Check Bus 3 Line for Short to GND
DESCRIPTION There may be a short circuit between one of the CAN bus lines and GND when there is no resistance between terminal 6 (CA3H) of the network gateway ECU and terminal 4 (CG) of the DLC3, or terminal 21 (CA3L) of the network gateway ECU and terminal 4 (CG) of the DLC3. Symptom Trouble A ...