Your vehicle is not designed to be dinghy towed (with 4 wheels on the ground) behind a motor home.
■To avoid serious damage to your vehicle Do not tow your vehicle with all four wheels on the ground.
Toyota CH-R Service Manual > How To Troubleshoot Ecu Controlled Systems: Electronic Circuit Inspection Procedure
ELECTRONIC CIRCUIT INSPECTION PROCEDURE
BASIC INSPECTION
(a) WHEN MEASURING RESISTANCE OF ELECTRONIC PARTS
(1) Unless otherwise stated, all resistance measurements are standard values
measured at an ambient temperature of 20°C (68°F). Resistance measurements may be
inaccurate if measured at ...
Toyota CH-R Service Manual > Door Control Transmitter(w/ Smart Key System): Inspection
INSPECTION
PROCEDURE
1. INSPECT ELECTRICAL KEY TRANSMITTER SUB-ASSEMBLY
(a) Inspect the operation of the electrical key transmitter sub-assembly.
(1) Remove the transmitter battery from the electrical key transmitter sub-assembly.
Click here
(2) Install a new or known good transmitter batt ...