Introduction

Modern vehicles rely on complex electronic systems to function smoothly, and the Mercedes 2017 GLA 250 CAN bus part number 0009820512 plays a vital role in that network. Whether you’re a mechanic, a DIY enthusiast, or a GLA owner facing electrical issues, understanding this part is key.

In this guide, we’ll dive into everything you need to know — from its function and compatibility to installation tips and troubleshooting advice. Let’s decode what this part does and how it impacts your vehicle’s performance.

What Is the Mercedes 2017 GLA 250 CAN Bus Part Number 0009820512?

The CAN (Controller Area Network) bus system is a vehicle communication protocol that links all microcontrollers and modules. Part number 0009820512 refers to a specific CAN bus-related component used in the 2017 Mercedes-Benz GLA 250.

Purpose of the CAN Bus

The CAN bus allows various systems like the engine, transmission, brakes, and infotainment to communicate in real-time. This helps ensure safety, efficiency, and comfort.

Role of Part Number 0009820512

Part 0009820512 is typically associated with communication wiring or a connector that ensures smooth data transmission across modules. If faulty, it can cause error codes, non-responsive systems, or complete module failures.

Why Is This Part So Important?

Your Mercedes GLA 250 relies on fast, stable communication between its ECUs (Electronic Control Units). A single faulty CAN bus wire or connector can:

• Trigger dashboard warning lights

• Disable cruise control or infotainment

• Affect fuel efficiency

• Prevent the car from starting altogether

That’s why Mercedes 2017 GLA 250 CAN bus part number 0009820512 is more than just a wire — it’s a lifeline for your vehicle’s electronics.

Symptoms of a Faulty CAN Bus Part 0009820512

Several common issues may indicate a failing CAN bus component:

Intermittent Electrical Failures

You may notice that features like auto start-stop or power windows stop working unpredictably.

Error Codes

Diagnostic scanners will often show CAN communication errors — typically labeled as “U” codes like U0100 or U0073.

Dashboard Warnings

ABS, ESC, or check engine lights might illuminate without an actual system fault — just a communication breakdown.

Failure to Start

If the CAN bus is completely interrupted, the car may not start, as ECUs fail to verify each other.

Where Is Part Number 0009820512 Located?

Mercedes doesn’t make this too easy. Depending on the model and configuration, part number 0009820512 can be found:

• Behind the dashboard

• Near the main fuse box

• In the engine bay, close to the firewall

Your best bet is to consult the Mercedes GLA 250 service manual or visit a dealership for a wiring diagram specific to the part.

Compatibility and Cross-References

Is Part 0009820512 Exclusive to the 2017 GLA 250?

This part is primarily used in the 2017 GLA 250 but might be found in similar models like the GLA 200 or GLA 220 depending on regional builds. Always confirm compatibility via your VIN and consult a Mercedes parts database like Mercedes EPC or MBPartsWorld.

Replacement and Installation Tips

Can You Replace It Yourself?

Technically, yes — but it requires patience and precision. Here’s what to know:

• Disconnect the battery before working on any electrical part.

• Access the part location by carefully removing the trim or dash panels.

• Use OE-approved tools to disconnect connectors safely.

• Avoid splicing or makeshift repairs — use original Mercedes connectors.

When to Get Professional Help

If you’re unsure or lack diagnostic tools, let a certified technician handle it. Improper installation can lead to costly ECU damage.

Where to Buy Part Number 0009820512

You can find the Mercedes 2017 GLA 250 CAN bus part number 0009820512 through:

• Authorized Mercedes-Benz dealerships

• OE parts suppliers like FCP Euro or Pelican Parts

• Online platforms like eBay (be cautious of used parts)

Ensure the seller provides a part number match guarantee.

Real-World Owner Tip

According to seasoned Mercedes owners on forums like MBWorld and BenzWorld, resolving CAN bus issues usually starts with checking:

• Ground connections

• Moisture intrusion (especially near the A-pillar or door sills)

• Corroded connectors

Pro tip: use dielectric grease to prevent future corrosion during reinstallation.

FAQ: People Also Ask

What does the CAN bus part number 0009820512 do in a Mercedes GLA?

It facilitates communication between control units. When damaged, it disrupts systems like ABS, engine, and infotainment.

How do I know if part 0009820512 is failing?

Look for communication error codes, flickering lights, or system malfunctions. A diagnostic scan will confirm the fault.

Is part number 0009820512 expensive?

It’s relatively affordable, typically priced between $30 and $80. Labor costs, however, may vary based on the installation complexity.

Can I bypass the CAN bus system temporarily?

No. Bypassing the CAN system can disable critical functions and void your warranty. Always use OEM components.

Want to explore more auto tech topics? Check out this excellent guide on Trevel Drives — a valuable resource for vehicle diagnostics and road safety.

The Mercedes 2017 GLA 250 CAN bus part number 0009820512 might seem like a small piece of wiring, but its role is huge. It ensures all the brains of your vehicle talk to each other effectively. Whether you’re replacing it yourself or having a pro handle it, knowing its function and importance puts you in control.

If you’re experiencing strange electrical issues or CAN-related error codes, don’t ignore them. Schedule a diagnostic check today or consult a trusted Mercedes-Benz specialist. Small fixes now can prevent big headaches later.