Originally Posted by hillary
I neglected to mention we do tow with a WDH, as per the manual to actually have the 3500lb towing capacity (I believe it's 1500lb or 2000lb without WDH)...
The capacity of a Sienna is actually 3500 pounds regardless of whether or not a weight-distributing hitch is used. Equipment to reach that 3500 pound capacity in the case of a Sienna is
- Toyota's "towing preparation package" (which is optional in some years and markets) for engine or transmission reliability
- trailer brakes (required for trailers over 1000 pounds)
- possibly a sway control device (depending on the year and information source) and of course a suitable hitch
A WDH hitch is needed with the Sienna if the hitch weight is over 350 pounds; some Escape 17's are this tongue-heavy, but they generally don't need to be.
Depending on year, the capacity without that towing prep package is only 1200 to 2000 pounds. Perhaps that or the sway control was what Hillary was thinking of.
The Grand Caravan requirements are likely similar, so this is a useful list of things to consider... but the owner's manual is the place to go for specific information. I don't think the Dodge manual contains any specific requirement for a WDH or sway control device, but it does require trailer brakes.