Permanent check
Suspension from exhaust gases, oil evaporation and silicone from lacquer care products are constantly deposited on the glass. In the warm season, therefore, it is recommended to add detergent to the water; in winter, an anti-freeze liquid is needed.
The water filler is located on the left side of the engine compartment next to the coolant expansion tank. The reservoir contains about 4.4 liters on models not equipped with a headlight washer system.
If the car is equipped with such a system, the tank holds about 6.4 liters.
First, pour in the detergent, only then water, so that these liquids are well mixed in the tank.
If the car is not equipped with a heating system for injection nozzles, they can freeze in severe frosts.
To prevent this, a higher concentration of antifreeze is recommended. An admixture of denatured alcohol can lead to the formation of flakes in combination with an antifreeze agent, as a result of which nozzles can become clogged.
Integrating a conventional petrol filter into the windshield washer line prevents clogging of the washer nozzles.
Rear window washer system for Audi-100/Avant (station wagon): The water tank with swivel filler is located under the cover on the right in the luggage compartment, see next page.
On vehicles with a power washer system, the detergent reservoir is located on the right rear in the engine compartment. Capacity: 1 liter.
Spray jet control
Despite the addition of anti-freeze liquid, the water may freeze in the nozzle. This process can be prevented by the nozzle heating system.
Insert the needle into the nozzle hole.
The hole itself is in a ball that can be rotated with a needle.
Turn the nozzle until the jet of water, as shown in the figure, begins to hit the glass.
Electrically heated nozzles
4 jets of water fall on the front window in the Audi-100 when the windshield washer system is turned on. How this happens is shown in Fig. on the next page.
Directly in front of the nozzles is a metal case with a heating resistor. With ignition on (terminal X) current flows through this resistor. The nozzles defrost quickly due to the high current flowing in at first (0.5-0.7 A). To maintain the temperature, the current after the heating phase is reduced to exactly 200 mA. If the external temperature is minus 15°C or lower, the holding current increases to 320 mA.
Troubleshooting
If the heated nozzles are not functioning, check as follows:
Disconnect the plug connection to the injector with the hood raised.
With the ignition on, check with a voltmeter for voltage.
Is the contact okay? «mass»?
Otherwise, look for wiring damage.
If everything is in order with the power supply, the nozzle should be replaced.
Visitor comments