The rear washer/wiper is shared with the front reservoir
It is the same reservoir for the front and the rear. Suspect a bad pump, or clogged, disconnected, or cracked hoses leading to the rear wiper.
Front reservoir should feed rear washer
there is no rear wiper fluid reservoir
uses the same as the front
They both pull from the same reservoir.
If there is a rear wiper on 2001+ V70s, it is a special volvo-only wiper blade and you have to go to the dealer to purchase it. Ask for instructions with the wiper blade. On 1998-2000 Volvo V70s, the rear wiper arm is the common hook-end arm. See sources and related links below for installation videos.
the fluid for the rear wiper comes from the same reservoir as the front windshield wipers. it is located in the engine compartment by the fuse box. the rear windshield wiper will run out of fluid before the front wiper though, so just make sure the reservoir is full
under the hood. one reservoir serves both front and rear washers
No, it draws from the front reservoir.
in the rear cargo area in the same space as the spare tire
No, the rear fluid comes out of the front reservoir.
No. Both washer systems use the under hood reservoir.