AutoCodes – Lexus – B2535 Lexus

B2535 Lexus Code - Tonneau Cover Switch Malfunction

Quick Answer

Turning the tonneau cover switch ON permits the luggage door to start opening. Common causes include Faulty Tonneau Cover Switch, Tonneau Cover Switch harness is open or shorted, Tonneau Cover Switch 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: B2535 Lexus indicates Tonneau Cover Switch Malfunction.
Common causes: Common causes include Faulty Tonneau Cover Switch, Tonneau Cover Switch harness is open or shorted, Tonneau Cover Switch 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 615

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 Dec 22, 2019

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code B2535 Lexus Description

Turning the tonneau cover switch ON permits the luggage door to start opening. Therefore, pressing the operating switch with the tonneau cover switch not turned ON causes the indicator to blink.

OBDII Code B2535 Lexus - Tonneau Cover Switch Malfunction - AutoCodes.com — B2535 Lexus Code - Tonneau Cover Switch Malfunction

What does this mean?

What are the Possible Causes of the DTC B2535 Lexus?

Faulty Tonneau Cover Switch
Tonneau Cover Switch harness is open or shorted
Tonneau Cover Switch circuit poor electrical connection
Faulty Sliding Roof Control ECU

How to Fix the DTC B2535 Lexus?

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 B2535 Lexus 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.

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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 B2535 Lexus Code

1. What are the common symptoms of OBDII code B2535 Lexus (Tonneau Cover Switch Malfunction)?

- The common symptoms include the tonneau cover not opening or closing properly, warning lights on the dashboard, and potential issues with the vehicle's security system.

2. What typically causes the OBDII code B2535 Lexus (Tonneau Cover Switch Malfunction)?

- The code is usually caused by a malfunctioning tonneau cover switch, wiring issues, or problems with the control module that manages the tonneau cover operation.

3. How can I diagnose the Tonneau Cover Switch Malfunction in my Lexus?

- To diagnose the issue, you can start by checking the tonneau cover switch for physical damage or wear. You may also use an OBDII scanner to retrieve the specific error code and pinpoint the exact cause.

4. Can I repair the Tonneau Cover Switch Malfunction in my Lexus myself?

- Depending on the cause of the issue, you may be able to repair it yourself. If it's a simple switch replacement, it can be a DIY project. However, more complex wiring or control module issues may require professional assistance.

5. Are there any temporary fixes I can try for the Tonneau Cover Switch Malfunction?

- One temporary fix could be manually operating the tonneau cover if possible, bypassing the switch temporarily. However, it's important to address the root cause of the issue to prevent further problems.

6. Will driving with the Tonneau Cover Switch Malfunction cause any long-term damage to my Lexus?

- Continuously driving with the tonneau cover malfunction can potentially cause further damage to the tonneau cover system or related components. It's best to address the issue promptly to avoid additional problems.

7. How much does it typically cost to repair the Tonneau Cover Switch Malfunction in a Lexus?

- The cost of repair can vary depending on the exact cause of the issue and whether you choose to DIY or seek professional help. Costs may range from a simple switch replacement to more complex wiring repairs.

8. Can the Tonneau Cover Switch Malfunction affect the overall security of my Lexus?

- Yes, the malfunctioning tonneau cover switch can impact the security of your vehicle, as it may not properly secure the tonneau cover, leaving your belongings in the trunk exposed. It's crucial to address the issue promptly.

9. Are there any preventive measures I can take to avoid the Tonneau Cover Switch Malfunction in my Lexus?

- Regularly inspecting the tonneau cover switch for signs of wear or damage, keeping the system clean, and addressing any issues promptly can help prevent the Tonneau Cover Switch Malfunction in your Lexus.

10. How long does it usually take to repair the Tonneau Cover Switch Malfunction in a Lexus?

- The repair time can vary depending on the complexity of the issue and whether you're doing the repair yourself or seeking professional help. Simple switch replacements may take less time compared to troubleshooting wiring problems.