P0585 - Cruise Control Switch Circuit Malfunction in Popular Vehicles

Quick Answer

P0585 means: P0585 indicates a malfunction in the cruise control switch circuit.

Fix: Check and replace faulty components Cost: $100 - $300 Time: 90-180 minutes

Can I drive with P0585? It is advisable to address this issue soon to avoid further complications.

Common Questions

What does P0585 mean and how does it affect my car?

The P0585 code reflects a problem with the cruise control switch circuit. This can result in your cruise control system failing to operate properly, affecting your vehicle's speed consistency and overall driving experience. If left unaddressed, it may lead to increased fatigue during long drives and decreased fuel efficiency.

What are the most common causes of P0585 and how much does it cost to fix?

Common causes include a faulty cruise control switch (60% likelihood), damaged wiring, or issues with the ECM. Repair costs typically range from $100 to $600 depending on the required service.

Can I drive my car with P0585 or should I stop immediately?

While it is generally safe to drive your car with a P0585 code, it’s recommended to address the issue soon. Continued use may lead to more significant problems, especially during long-distance driving.

How can I diagnose P0585 myself using GeekOBD APP?

Using the GeekOBD APP, you can perform a quick OBD2 scan to retrieve the P0585 code. The app can also provide freeze frame data, helping you understand the conditions under which the code was triggered. From there, you can inspect the cruise control switch and wiring for any visible issues.

What vehicles are most commonly affected by P0585?

Commonly affected vehicles include the 2006-2011 Toyota RAV4, 2010-2015 Chevrolet Equinox, and 2012-2018 Ford Focus. Always check for any recalls or technical service bulletins related to your specific make and model.

How can I prevent P0585 from happening again?

Regularly inspect and maintain the cruise control system, including checking for wear on switches and ensuring wiring is intact. Keeping the ECM software updated can also prevent future issues.

What is P0585?

The P0585 diagnostic trouble code (DTC) indicates a malfunction in the cruise control switch circuit. This code commonly affects vehicles such as the 2006-2011 Toyota RAV4, 2010-2015 Chevrolet Equinox, and 2012-2018 Ford Focus, among others. When the cruise control system fails, it means that the vehicle may not maintain a steady speed, which could lead to reduced fuel efficiency and increased driver fatigue during long trips. The fault can arise due to a faulty cruise control switch, damaged wiring, or issues within the engine control module (ECM) that manages the cruise control system. In practical terms, if you're experiencing issues with your cruise control not engaging or disengaging correctly, it is important to address this issue promptly. Ignoring the P0585 code could result in further complications within your vehicle's electrical system, potentially leading to more expensive repairs down the line. Understanding what this code means and how it affects your vehicle's performance can help you navigate repairs effectively and maintain optimal driving conditions.

System: P - Powertrain (Engine, Transmission, Emissions)

Symptoms

Common symptoms when P0585 is present:

  • The Check Engine Light (CEL) may illuminate, providing a visual warning that something is wrong with the cruise control system.
  • When attempting to engage cruise control, the system may fail to activate, leading to frustration during highway driving.
  • There may be noticeable fluctuations in speed, as the cruise control does not maintain a steady pace, which can affect fuel economy and driving comfort.
  • You might also notice that manually adjusting the throttle does not respond as expected, indicating a potential electronic issue.
  • In some cases, you might hear unusual clicks or noises from the steering column area where the cruise control switch is located.

Possible Causes

Most common causes of P0585 (ordered by frequency):

  1. The most common cause is a faulty cruise control switch, which is responsible for signaling the ECM. This accounts for about 60% of P0585 cases.
  2. Another likely cause is damaged wiring or connectors within the cruise control circuit, leading to intermittent connections.
  3. A malfunctioning engine control module (ECM) can also trigger this code if it fails to properly interpret signals from the cruise control switch.
  4. Less common issues include a blown fuse related to the cruise control system, which can disrupt functionality.
  5. In rare cases, software glitches in the vehicle's onboard computer could result in the P0585 code, requiring a software update or reprogramming.

P0585 Repair Costs

Cost Breakdown by Repair Type

Cruise Control Switch Replacement

Replacing the faulty cruise control switch can resolve the P0585 code.

  • Total: $100 - $300
  • Success rate: 85%
Wiring Repair

Repairing or replacing damaged wiring in the cruise control circuit can also fix the issue.

  • Total: $150 - $400
  • Success rate: 75%
ECM Reprogramming

If the issue is related to the ECM, reprogramming may be required.

  • Total: $200 - $600
  • Success rate: 70%
Money-Saving Tips for P0585
  • Start with the most common and least expensive repairs first
  • Use GeekOBD APP to confirm diagnosis before replacing expensive parts
  • Consider preventive maintenance to avoid future occurrences
  • Compare prices for OEM vs aftermarket parts based on your needs
  • Address the issue promptly to prevent more expensive secondary damage

Diagnostic Steps

Professional P0585 Diagnosis Process

Follow these systematic steps to accurately diagnose P0585. Each step builds on the previous one to ensure accurate diagnosis.

Step 1: Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion in the cruise control circuit (5-10 minutes)

Step 1: Initial visual inspection - Check for obvious signs like damaged wiring, loose connections, or corrosion in the cruise control circuit (5-10 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 2: Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes)

Step 2: OBD2 scan with GeekOBD APP - Retrieve all codes and freeze frame data to understand the fault context (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 3: Step 3: Component testing - Use a multimeter to test the cruise control switch and associated wiring for continuity and resistance (20-30 minutes)

Step 3: Component testing - Use a multimeter to test the cruise control switch and associated wiring for continuity and resistance (20-30 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 4: Step 4: System function test - After repairs, verify that the cruise control operates correctly and clear the codes with the GeekOBD APP (10-15 minutes)

Step 4: System function test - After repairs, verify that the cruise control operates correctly and clear the codes with the GeekOBD APP (10-15 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.
Step 5: Step 5: Road test verification - Drive the vehicle under various conditions to confirm the cruise control system is functioning as expected (15-20 minutes)

Step 5: Road test verification - Drive the vehicle under various conditions to confirm the cruise control system is functioning as expected (15-20 minutes).

GeekOBD APP Tip: Use GeekOBD APP to monitor real-time data during this diagnostic step for accurate results and professional-grade analysis.

Important Notes

  • Always verify the repair with GeekOBD APP after completing diagnostic steps
  • Clear codes and test drive to ensure the problem is resolved
  • Address underlying causes to prevent code recurrence

Real Repair Case Studies

Case Study 1: Cruise Control Switch Replacement on 2010 Chevrolet Equinox

Vehicle: 2010 Chevrolet Equinox, 85,000 miles

Problem: Customer reported that the cruise control would not engage.

Diagnosis: A diagnostic scan revealed the P0585 code. Inspection showed the cruise control switch was faulty.

Solution: The cruise control switch was replaced with a genuine GM part.

Cost: $150 (parts $80, labor $70)

Result: The cruise control system functioned properly after the repair, and the customer reported satisfaction with the service.

Case Study 2: Wiring Repair on 2015 Ford Focus

Vehicle: 2015 Ford Focus, 60,000 miles

Problem: Customer experienced sporadic cruise control failures.

Diagnosis: Scanning the vehicle revealed P0585. Inspection found damaged wiring in the switch circuit.

Solution: Repaired the damaged wiring and secured all connections.

Cost: $200 (parts $50, labor $150)

Result: Post-repair, the cruise control operated correctly, and the issue was resolved.

Diagnose P0585

Use GeekOBD APP for professional diagnosis!

  • Real-time data monitoring
  • Advanced diagnostic features
  • Step-by-step repair guidance
  • Professional-grade analysis
Download GeekOBD APP Get MOBD Adapter

Code Information

Code: P0585
System: Powertrain (Engine, Transmission, Emissions)
Severity: MEDIUM
Category: Engine Codes