Mercedes-Benz Error Code P1573: How to Fix It

Medium 30-60 minutes Low Severity Verified June 2026
Error Code
P1573
Brand
Mercedes-Benz
Product Type
automotive
Severity
Low
DIY Difficulty
Medium
Estimated Fix Time
30-60 minutes
Mercedes-Benz error code P1573 indicates that Component K40 is not properly coded or programmed in your vehicle's control unit. This is typically related to electronic control modules that need software configuration after installation or replacement.
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Tools You'll Need

How to Fix Error Code P1573

  1. Connect OBD2 Scanner

    Ensure the vehicle is parked safely with the parking brake engaged before connecting any diagnostic equipment.
  2. Identify Component K40

  3. Access Coding Menu

  4. Retrieve Correct Coding Data

    Double-check your VIN entry as incorrect coding can cause additional malfunctions.
  5. Program Component K40

    Do not turn off the ignition or disconnect the scanner during the coding process as this can damage the control unit.
  6. Clear Error Codes

  7. Verify Fix

Parts You May Need

Professional OBD2 scanner with coding capability
Check Price on Amazon
Professional OBD2 scanner with coding capability
Check Price on Amazon
Professional OBD2 scanner with coding capability
Check Price on Amazon
Professional OBD2 scanner with coding capability
Check Price on Amazon
Professional OBD2 scanner with coding capability
Check Price on Amazon
Professional OBD2 scanner with coding capability
Check Price on Amazon
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When to Call a Professional

Call a Mercedes-Benz technician or qualified automotive professional if you don't have access to proper coding equipment, if the coding process fails repeatedly, or if you're uncomfortable working with vehicle electronics. Incorrect coding can cause additional system malfunctions.

Frequently Asked Questions

What is Component K40 in a Mercedes-Benz?
Component K40 designation varies by Mercedes model and year, but commonly refers to control modules for convenience features, lighting systems, or auxiliary electronic components that require specific software configuration.
Can I drive my Mercedes with P1573 error code?
Yes, P1573 is typically a low-severity code that won't prevent driving. However, certain convenience features or electronic systems may not function properly until the component is properly coded.
Will P1573 cause my Mercedes to fail inspection?
In most cases, P1573 won't cause an emissions test failure since it's related to component coding rather than emissions systems. However, check your local inspection requirements as some areas have strict OBD requirements.
How much does it cost to fix Mercedes P1573 at a dealer?
Dealer repair typically costs $150-300 for diagnosis and coding, depending on your location and specific Mercedes model. Independent shops with proper equipment may charge less.
Can a basic OBD2 scanner fix P1573?
No, basic OBD2 scanners can only read the code. You need a professional scanner with Mercedes coding capabilities or access to Mercedes STAR diagnostic system to perform the actual coding procedure.