AutoCodes – Mercury – B1435 Mercury

B1435 Mercury Code - Wiper Hi/Low Speed Relay Coil Circuit Open

Quick Answer

The Body Control Module (BCM) monitors the Wiper Hi/Low Speed Relay Coil. Common causes include Faulty Wiper Hi/Low Speed Relay Coil, Wiper Hi/Low Speed Relay Coil harness is open or shorted, Wiper Hi/Low Speed Relay Coil circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: B1435 Mercury indicates Wiper Hi/Low Speed Relay Coil Circuit Open.
Common causes: Common causes include Faulty Wiper Hi/Low Speed Relay Coil, Wiper Hi/Low Speed Relay Coil harness is open or shorted, Wiper Hi/Low Speed Relay Coil circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 663

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Apr 09, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B1435 Mercury Description

The Body Control Module (BCM) monitors the Wiper Hi/Low Speed Relay Coil. The BCM sets the OBDII code when the Wiper Hi/Low Speed Relay Coil is not to factory specifications.

OBDII Code B1435 Mercury - Wiper Hi/Low Speed Relay Coil Circuit Open - AutoCodes.com — B1435 Mercury Code - Wiper Hi/Low Speed Relay Coil Circuit Open

What does this mean?

What are the Possible Causes of the DTC B1435 Mercury?

Faulty Wiper Hi/Low Speed Relay Coil
Wiper Hi/Low Speed Relay Coil harness is open or shorted
Wiper Hi/Low Speed Relay Coil circuit poor electrical connection
Faulty Body Control Module (BCM)

How to Fix the DTC B1435 Mercury?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the B1435 Mercury code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

Need more information about the B1435 Mercury code?

Need more information on how to fix the B1435 Mercury code? Get Access to Factory Service Manuals

Need Help with the Code?

Get the B1435 Mercury code diagnosed by a professional: Find a repair shop in your area

About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about B1435 Mercury Code

1. What are the common symptoms of OBDII code B1435 Mercury?

The common symptoms of code B1435 include issues with the wiper high/low speed function, such as the wipers running at only one speed or not working at all.

2. What can cause the OBDII code B1435 Mercury to appear?

The code B1435 is triggered when there is an open circuit in the wiper hi/low speed relay coil, which can be caused by damaged wiring, a faulty relay, or a problem with the wiper switch.

3. How do I diagnose the cause of OBDII code B1435 Mercury?

To diagnose the cause of code B1435, you can start by checking the wiring and connections related to the wiper hi/low speed relay, testing the relay itself, and inspecting the wiper switch for any faults.

4. Can I still drive my vehicle with OBDII code B1435 Mercury?

While it may be possible to drive the vehicle with this code, it is not recommended as the wipers are essential for visibility in various weather conditions. It is best to address the issue promptly.

5. How can I repair OBDII code B1435 Mercury?

Repairing code B1435 typically involves fixing the open circuit in the wiper hi/low speed relay coil. This may include repairing or replacing damaged wiring, replacing the faulty relay, or addressing any issues with the wiper switch.

6. Is it possible to reset OBDII code B1435 Mercury without fixing the underlying issue?

Resetting the code without fixing the underlying issue will only temporarily clear the error code. The problem will persist, and the code is likely to reappear until the root cause is addressed.

7. Can extreme weather conditions contribute to triggering OBDII code B1435 Mercury?

Yes, extreme weather conditions such as heavy rain or snow can potentially exacerbate the issues related to code B1435, especially if there are existing wiring or relay problems.

8. How long does it typically take to repair OBDII code B1435 Mercury?

The repair time for code B1435 can vary depending on the exact cause of the issue and the skill level of the person performing the repairs. It can range from a quick fix to a more involved repair job.

9. Are there any preventive measures to avoid OBDII code B1435 Mercury in the future?

Regularly inspecting and maintaining the wiper system, including checking the wiring and relays for any signs of wear or damage, can help prevent issues that may trigger code B1435 in the future.

10. Can I use a generic OBDII scanner to diagnose OBDII code B1435 Mercury in my Mercury vehicle?

Yes, a generic OBDII scanner can be used to retrieve and diagnose code B1435 in your Mercury vehicle, as long as the scanner is capable of reading manufacturer-specific codes.