Windshield wipers
Windshield wipers include the following elements:
- Windscreen wiper arms (2 pcs.)
- Windscreen wiper motor on the deflector grille
- Windshield wiper linkage
- Windshield wiper blades (2 pcs.)
- Windscreen wiper relay, in central electrical distribution box
- Central Timer Module (CTM) in CJB
- Multifunctional switch that includes
- Windscreen wiper switch
- Windscreen washer switch (push switch) and
- Cleaning interval regulator (rotary regulator, depending on model)
Windshield wiper functions
The windshield wiper motor has two speeds and a limit switch for the idle position. It is controlled by the multi-function switch mounted on the steering column via the windshield wiper relay and CTM.
After the ignition is switched on (position II), the following five windscreen wiper operating modes are available:
- Off
- One-time cleaning
- Slow cleaning
- Quick cleaning
- Intermittent cleaning
Windscreen wiper lever in OFF position
If the windshield wiper switch is moved from any position to the OFF position, the wiper motor will run at low speed until the off position is reached and then stop. This is accomplished through a second electrical circuit and a limit switch. In this way, power to the wiper motor continues after the switch is turned off until the limit switch interrupts the power supply through the wiper relay (normally closed contact) and the multi-function switch.
Windscreen wiper lever in ONCE position (single wipe)
Press the windshield wiper lever down and release it. The lever automatically returns to the OFF position. The windshield wipers perform a low-speed cleaning cycle. Electric current flows through the multi-function switch to the wiper motor.
Windscreen wiper lever in SLOW position
Press the windshield wiper lever up two positions. The windshield wipers operate at low speed. Electric current flows through the multifunction switch to the wiper motor.
Windscreen wiper lever in FAST position
Press the windshield wiper lever up three positions. The windshield wipers operate at high speed. Electric current flows through the multi-function switch to the wiper motor.
Windscreen wiper lever in the INTERMITTENT position (intermittent wiping)
Press the wiper stalk up one position. The windscreen wipers perform single, low-speed wipes with pauses between each wipe. The intermittent wipe period depends on the trim level and is either fixed at 9 seconds or can be selected from six settings by turning the control knob at the end of the wiper stalk (position 1 = shortest pause, position 6 = longest pause).
The multi-function switch sends a 12 V signal via the normally closed contact of the washer relay to the CTM, which periodically activates the windscreen wiper relay, at intervals of 9 seconds or according to the selected intermittent wiping interval (depending on the equipment level). The current then flows through the windscreen wiper relay (normally open contact) and the multi-function switch to the wiper motor.
Windshield washer
WARNING: Windshield washer fluid contains methanol, which is poisonous. Follow safety precautions.
CAUTION: Operate the windshield washer with the headlights on for a maximum of 10 seconds and do not operate the windshield washer when the washer reservoir is empty.
The windshield washer includes the following elements:
- Windshield washer reservoir located under the left front fender
- Windscreen washer pump located on the outside of the windscreen washer reservoir
- Two adjustable windshield washer nozzles on the hood.
There are two modes, depending on the windshield wiper operating mode:
The windshield wiper lever is in the OFF or INTERMITTENT position
The windshield wipers and the washer pump operate as long as the wiper lever is pulled toward the steering wheel. The washer pump stops immediately when the wiper lever is released. The windshield wipers perform two or three more cycles and continue to operate intermittently (INTERVAL position) or stop (OFF position).
Windscreen wiper lever in SLOW (slow wipe) or FAST (fast wipe) position
The washer system operates in conjunction with the windshield wipers as long as the wiper lever is pulled toward the steering wheel. Current flows from the multifunction switch through the washer pump to the CTM module and to the washer switch. The washer switch provides ground connection when active.
Heated washer nozzles (if equipped)
Heating of the injectors is carried out continuously after the ignition is turned on (position II).
Rear window wiper
The rear window wiper consists of the following elements:
- Rear window wiper motor
- Rear window wiper arm
- Windscreen wiper blade
- Interval cleaning relay, under right front shock absorber
- One nozzle
Rear window wiper and washer (if equipped)
To turn on, press the windscreen wiper lever towards the instrument panel. The system operates as long as the lever is pressed. When the lever is released, the system returns to its inoperative position. The water for the rear window washer system is taken from the windscreen washer system reservoir (see chapter "Windscreen washer system"), and the same pump is used.
In this case, the windshield washer pump operates in a direction of rotation opposite to that required to wash the windshield.
Current flows from the central electrical distribution box through the windshield washer pump to the windshield washer switch. The windshield washer switch provides a ground connection when active.
Headlight washer
CAUTION: Use headlight washer fluid for a maximum of 10 seconds at a time and never use when the reservoir is empty.
The headlight washer includes the following elements:
- Headlamp washer pump, outside of washer reservoir
- Headlight washer relay, left under instrument panel
- Nozzles (2 pcs.)
The headlight washing system operates when the windshield washer is on and the headlights (low or high beam) are on. Electrical control is performed by means of a headlight washing system relay. The system operates when it receives power from both the light switch and the windshield washer switch.
Low washer fluid level indicator light (if equipped)
Consists of the following elements:
- Windscreen washer fluid low level indicator light (on instrument panel)
- Switch in the windshield washer reservoir
- Auxiliary warning system module (in the center of the instrument panel)
The warning light indicates that the windshield washer reservoir is only a quarter full. The float switch of the windshield washer system acts as a sensor. When there is sufficient washer fluid, the switch connects the "ground" to the digital input of the auxiliary warning system module. The electrical circuit is broken if the fluid level drops to a quarter of the reservoir volume.
A procedure used if a malfunction occurs in which the windshield washer fluid leaks from the filled windshield washer reservoir during sudden acceleration or braking of the vehicle.
Cars manufactured up to and including 09.12.98 (manufacturing code WG)
If the opening in the reservoir vent tube is too large, the windshield washer fluid may leak out of the completely filled reservoir when the vehicle accelerates or brakes sharply. If this occurs, it can be corrected by installing an additional cap on the rear reservoir vent tube. For more information, refer to Chapter 32 622 0 in this section.
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