There is a wiring error.
On some models, when the indicator switch is put into the turn position with the ignition OFF the front and rear indicator lights on the selected side act as parking lights.
indicator lights means the vehicle is turning
Indicator lights for toyota, are used to communicate to other cars that its turning
check your owner's manual
sounds like a wiring problem
lights are required to be installed on every trailer
Some cars have internal LED lights installed. There are several purposes for interior LED lights some include providing lighting and some just for decoration.
If a Passat 04 TDI's indicator lights are not working, check the fuse. A blown fuse can cause the lights to stop working.
under the fuse box inside to the right of the driver. Black on on the left. the right one is the hazard lights relay.
The problem points to the directional/lights and hazard switch. The brake light wiring is part of that circuit.You can buy the switch after market it is about $70.00.
the easiest way is just to go to a garage, because if you fiddle with the wires and muck up the lights then you will have to pay for them aswell as the indicator lights
You can get the best emergency lights installed in the Delaware Vally at ledqusa.