Mercedes-Benz S-Class W140 Sedan Wiper (1991-1998)

The Mercedes-Benz S-Class W140 Sedan is a full-size luxury sedan that was produced from 1991 to 1998. It is the fourth generation of the S-Class and was the flagship model of Mercedes-Benz during its production. The W140 was available in both short-wheelbase and long-wheelbase versions, and was offered with a variety of engine options, including inline-6, V8, and V12 engines.

The W140 was known for its advanced technology and luxurious features, and it was one of the first cars to be equipped with a rain-sensing wiper system. The wiper system used a sensor to detect the amount of rain on the windshield and adjust the wiper speed accordingly. The system also included an intermittent wipe function, which allowed the wipers to pause for a few seconds between wipes.

The wiper system on the W140 was controlled by a series of relays and switches, which were located in the fuse box under the hood. The following is a diagram of the wiper system:

[Image of wiper system diagram]

The wiper system on the W140 was a complex system, but it was also very reliable. The system was designed to last for the life of the vehicle, and it rarely required any maintenance.

Troubleshooting the Wiper System

If you are experiencing problems with the wiper system on your W140, there are a few things you can check:

 Check the fuses. The fuses for the wiper system are located in the fuse box under the hood. If any of the fuses are blown, replace them with new fuses of the same amperage.
 Check the relay. The relay for the wiper system is located in the fuse box under the hood. If the relay is faulty, replace it with a new relay.
 Check the switch. The switch for the wiper system is located on the steering column. If the switch is faulty, replace it with a new switch.
 Check the motor. The motor for the wiper system is located under the hood. If the motor is faulty, replace it with a new motor.

Replacing the Wiper Blades

The wiper blades on the W140 should be replaced every six months to a year. To replace the wiper blades, follow these steps:

1. Lift the wiper arm away from the windshield.
2. Push down on the tab on the back of the wiper blade.
3. Slide the wiper blade off of the wiper arm.
4. Slide the new wiper blade onto the wiper arm.
5. Push up on the tab on the back of the wiper blade to lock it into place.
6. Lower the wiper arm back onto the windshield.

The Mercedes-Benz S-Class W140 Sedan was a technologically advanced and luxurious sedan. The wiper system on the W140 was one of the most advanced wiper systems available at the time, and it was designed to last for the life of the vehicle. If you are experiencing problems with the wiper system on your W140, there are a few things you can check to troubleshoot the problem.