1. Check the Wiper Fuse:
- Open the fuse box in your vehicle (usually located under the dashboard or in the engine compartment).
- Identify the fuse responsible for the intermittent wipers.
- Check if the fuse is blown. If it is, replace it with a new fuse of the same amperage rating.
2. Inspect the Wiper Switch/Stalk:
- Check the wiper switch or stalk on your steering column to ensure it's functioning correctly.
- Try operating the intermittent wiper settings multiple times to see if it responds.
- If the switch feels faulty or doesn't engage the intermittent setting properly, it might need repair or replacement.
3. Verify Wiper Motor:
- Locate the wiper motor under the hood, usually at the base of the windshield.
- Check if the motor is receiving power. You can do this by using a multimeter to test for voltage.
- If the motor is not receiving power, there may be an issue with the wiring or the motor itself.
4. Examine Wiper Relay:
- Find the wiper relay in your vehicle's fuse box.
- Swap the wiper relay with another identical relay in the fuse box (if available) to see if it solves the issue.
- If the intermittent wipers start working with the new relay, the original relay may be faulty and need replacement.
5. Inspect Wiper Linkage:
- The intermittent wipers rely on the wiper linkage to operate. Check if the linkage is connected correctly and if any parts are damaged.
- If the linkage is loose, try tightening it. Damaged components may need replacement.
6. Check Wiring Connections:
- Ensure that all electrical connections related to the wiper system are secure and free from corrosion.
- Look for any loose or damaged wires that might affect the functionality of the intermittent wipers.
7. Diagnostic Scan:
- Since it is a Renault Scenic, it might be helpful to connect a diagnostic scan tool to the vehicle's OBD-II port.
- The diagnostic tool can provide information about any fault codes related to the wiper system, which can help identify the root cause of the problem.
If none of these steps resolve the issue, it's advisable to seek assistance from a qualified mechanic or an authorized Renault service center.
