AutoCodes – Mercedes-Benz – P0565 Mercedes Benz

P0565 Mercedes Benz Code - Cruise Control On Signal Malfunction

Quick Answer

The cruise control system keeps the vehicle running at a fixed speed until a signal canceling this fixed speed is received. Common causes include Faulty Cruise Control Switch, Cruise Control Switch harness is open or shorted, Cruise Control Switch circuit poor electrical connection. Severity is Low - monitor the vehicle and repair when practical. The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

What it means: P0565 Mercedes Benz indicates Cruise Control On Signal Malfunction.
Common causes: Common causes include Faulty Cruise Control Switch, Cruise Control Switch harness is open or shorted, Cruise Control Switch circuit poor electrical connection.
Severity: Low - monitor the vehicle and repair when practical.
Can I drive?: The vehicle can usually be driven if no severe symptoms are present, but symptoms should be checked before extended driving.

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Code Popularity 7,366

How popular is this code, among other codes? Low

Repair Importance Level

Low (Monitor) (1 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on Jul 13, 2022

Description
Possible Causes
How To Fix
Cost to Diagnose
FAQs
Comments
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Code P0565 Mercedes Benz Description

The cruise control system keeps the vehicle running at a fixed speed until a signal canceling this fixed speed is received. When the main switch is turned on with the vehicle in the running mode, the battery voltage is applied to the Engine Control Module (ECM). When a signal from the control switch is input to the ECM while the vehicle is in a state, the ECM controls fuel injection to make a car go at a steady speed you want. Also, while the system is operating, "CRUISE" indicator lamp in the meter assembly lights up. The ECM monitors the Cruise Control Switch signal and sets the OBDII codes when the Cruise Control Switch is not to factory specifications.

OBDII Code P0565 Mercedes Benz - Cruise Control On Signal Malfunction - AutoCodes.com — P0565 Mercedes Benz Code - Cruise Control On Signal Malfunction

What does this mean?

What are the Possible Causes of the DTC P0565 Mercedes Benz?

Faulty Cruise Control Switch
Cruise Control Switch harness is open or shorted
Cruise Control Switch circuit poor electrical connection

How to Fix the DTC P0565 Mercedes Benz?

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 P0565 Mercedes Benz 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 P0565 Mercedes Benz code?

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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 P0565 Mercedes Benz Code

1. What does the OBDII code P0565 mean on a Mercedes-Benz?

P0565 indicates a malfunction in the cruise control "On" signal, meaning the system is unable to properly detect or process the command to activate cruise control.

2. What are the common symptoms of code P0565 in a Mercedes-Benz?

Typical symptoms include the cruise control not activating, difficulty maintaining a set speed, or the cruise control system being entirely non-functional.

3. What causes the P0565 code to appear on a Mercedes-Benz?

Potential causes include a faulty cruise control switch, damaged wiring or connectors, a malfunctioning clock spring, or issues with the Engine Control Module (ECM).

4. Can a faulty cruise control switch trigger the P0565 code?

Yes, a defective or worn-out cruise control switch is one of the most common reasons for this code to appear.

5. How can I diagnose the P0565 code on my Mercedes-Benz?

Start by visually inspecting the cruise control switch, wiring, and connectors for damage. Use a scan tool to monitor the cruise control signal and test the switch functionality.

6. Is it safe to drive with the P0565 code on my Mercedes-Benz?

Yes, it is generally safe to drive, but your cruise control system may not function until the issue is resolved.

7. How do you fix the P0565 code on a Mercedes-Benz?

Repairs may include replacing the cruise control switch, repairing damaged wiring or connectors, or reprogramming or replacing the ECM if necessary.

8. Can a blown fuse cause the P0565 code in a Mercedes-Benz?

While uncommon, a blown fuse related to the cruise control system can contribute to this code and should be checked during diagnostics.

9. Will clearing the P0565 code fix the problem permanently?

Clearing the code will only temporarily erase it. If the underlying issue is not resolved, the code will reappear.

10. How much does it cost to repair the P0565 code on a Mercedes-Benz?

The cost depends on the root cause. Replacing a cruise control switch may cost $100-$300, while more complex issues like ECM replacement can be significantly more expensive.