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.
Trailer towingToyota CH-R Service Manual > Can Communication System: Certification ECU Communication Stop Mode
DESCRIPTION
Detection Item
Symptom
Trouble Area
Certification ECU Communication Stop Mode
Any of the following conditions are met:
Communication stop for "Certification (Smart)" is indicated
on the "Comm ...
Toyota CH-R Service Manual > Airbag System: Lost communication with Side Airbag Sensor RH (B1622/81,B1623/81,B1632/81,B1633/81,B1642/81,B1643/81,B166D/81,B166E/81)
DESCRIPTION
The side collision sensor RH circuit (bus 1) consists of the airbag sensor assembly,
door side airbag sensor RH, No. 1 side airbag sensor RH and No. 2 side airbag sensor
RH.
The door side airbag sensor RH, No. 1 side airbag sensor RH and No. 2 side airbag
sensor RH detect impacts ...