Power Window Relays

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What is a power window relay?

A power window relay is an electrical component that helps control the flow of electricity from the battery to the power windows of a car. It allows the power windows to be operated from the driver's seat and helps keep the current at a steady, safe level.

What are the signs of a faulty power window relay?

Signs of a faulty power window relay can include:

  1. The power windows will not move regardless of the switch position.
  2. The power windows may move slowly or intermittently, or with a grinding noise.
  3. The windows may not open or close completely.


Can a faulty power window relay cause damage to the car?

Yes, if the power window relay is not functioning correctly, it can cause damage to the power window system and potentially other electrical components.

How do you replace a power window relay?

Replacing a power window relay can be done as follows:

  1. Disconnect the negative battery cable.
  2. Find and remove the power window relay.
  3. Install the new power window relay.
  4. Reconnect the negative battery cable.


How often should you inspect your power window relay?

Power window relays should be inspected at least once a year, or whenever you notice any of the signs that it may have become faulty.