Toyota Sienna 2010-2025 Owners Manual: Towing related terms
GCWR (Gross Combination Weight Rating)
The maximum allowable gross combination weight. The gross combination weight is the sum of the total vehicle weight (including the occupants, cargo and any optional equipment installed on the vehicle) and the weight of the trailer being towed (including the cargo in the trailer).
GVWR (Gross Vehicle Weight Rating)
The maximum allowable gross vehicle weight. The gross vehicle weight is the total weight of the vehicle. When towing a trailer, it is the sum of the vehicle weight (including the occupants, cargo and any optional equipment installed on the vehicle) and the tongue weight.
GAWR (Gross Axle Weight Rating)
The maximum allowable gross axle weight. The gross axle weight is the load placed on each axle (front and rear).
TWR (Trailer Weight Rating)
The maximum allowable gross trailer weight. The gross trailer weight is the sum of the trailer weight and the weight of the cargo in the trailer.
TWR is calculated assuming base vehicle with one driver, one front passenger, towing package, hitch and hitch systems (if required).
Additional optional equipment, passengers and cargo in the vehicle will reduce the trailer weight rating so as not to exceed GCWR, GVWR and GAWR.
If the gross trailer weight exceeds 3000 lb. (1360 kg), it is recommended to use a trailer with 2 or more axles.
Unbraked TWR (Unbraked Trailer Weight Rating)
The trailer weight rating for towing a trailer without a trailer service brake system.
Tongue Weight
The load placed on the trailer hitch ball.
Trailer towing
(with towing package)
Your vehicle is designed primarily as a passenger-and-load-carrying
vehicle. Towing a trailer can have an adverse impact on
handling, performance, braking, durability, and fuel consumption.
For y ...
Weight limits
The gross trailer weight must never exceed 3500 lb. (1588 kg).*
The gross combination weight must never exceed the GCWR
described below.
2WD models: 8900 lb. (4037 kg)*
AWD models: 89 ...
Other materials:
Closing the fuel tank cap
After refueling, turn the fuel tank
cap until you hear a click. Once
the cap is released, it will turn
slightly in the opposite direction.
WARNINGWhen replacing the fuel tank cap
Do not use anything but a genuine Toyota fuel tank cap designed for
your
vehicle. Doing so may c ...
Receiving a call
When a call is received, the following screen is displayed
together with a sound.
To answer the phone
Press the switch on the steering
wheel or select .
To refuse a call
Press the switch on the steering
wheel or select
To adjust the incoming call volume
Turn the “PWR•VOL” knob ...
Rear Air Conditioning Relay Circuit
DESCRIPTION
The RR A/C relay is switched on by signals from the A/C amplifier. It
supplies power to the rear blower
motor.
WIRING DIAGRAM
INSPECTION PROCEDURE
1 INSPECT RELAY (RR A/C)
(a) Remove the RR A/C relay from the No. 3 relay block.
(b) Measure the resistance according to t ...
