Mercedes GLC AdBlue Error
If you drive a Mercedes GLC, you’re probably familiar with its luxury, class and reliability. But what happens when you get an AdBlue system error on your dashboard?
That’s what happened to our client’s Mercedes GLC. Thankfully, they’d heard of Shires Garage from a friend and chose to bring their vehicle to our experts.
At Shires Garage, we’re Mercedes specialists and can solve any problem your vehicle has during the first visit.
Our experts were confident they could solve the client’s AdBlue system error and got to work immediately.
Need help with your Mercedes AdBlue system? Call our experts today for a quality first-time fix.
Identified Faults
The first step to diagnosing the GLC’s problem is to confirm the customer’s issues and accurately identify the root cause. It’s common for the problem to differ from what is initially reported.
Our Mercedes specialists conducted a thorough visual examination of the vehicle, inspecting the underside, the engine compartment, and the area around the AdBlue container. With no leaks detected in the system, it was clear the issue was located elsewhere.
Upon reviewing the dashboard warnings, our technician uncovered concerning signs; the vehicle’s system could not detect the AdBlue fluid level, a situation that could escalate into more significant issues, including the car entering the dreaded “limp mode”.
To address the Mercedes GLC’s issues, our technician used their decades of experience and our detailed 15-step diagnostic process.
Diagnostic Procedure
Our Mercedes technicians follow an in-depth 15-step diagnostic process to pinpoint the root cause of any issues and implement solutions swiftly. This comprehensive approach ensures no potential problems are overlooked, allowing us to provide the right solution for your vehicle.
In this instance, our technician proceeded with a complete vehicle software evaluation using Xentry, the advanced software also used by Mercedes dealerships. This allowed them to retrieve critical fault codes related to the AdBlue system.
As your local independent Mercedes specialist, we have access to the same level of technical information as the main Mercedes dealerships. You get the same quality for better value with us.
Our experts found the following codes:
- P246309: Issue with the particulate filter, indicating soot content that was not acceptable.
- P20F500: Excessive AdBlue consumption
While fault codes provide a general indication of issues, they don’t detail specific solutions; it’s up to our skilled technicians to delve deeper into the problem.
Following the software analysis, our technician examined the incoming and outgoing data from the AdBlue system to check for any leaks or issues with the electrical wiring. The live data confirmed that the Engine Control Unit (ECU) was receiving correct AdBlue signals.
Subsequent tests of the fluid levels and quality revealed the actual issue: AdBlue fluid was overflowing from its container, preventing the ECU from measuring the fluid level accurately.
If not addressed, this overflow could lead to significant damage.
Fortunately, our client brought their Mercedes GLC to Shires Garage just in time, allowing our specialists to diagnose the problem before it escalated into a more severe issue.
The Problem and its Solution
Once our Mercedes specialists identified the problem, we called the client to discuss our findings and offer a solution.
At Shires Garage, you remain in complete control throughout the process. We only start working on your vehicle when you say so.
Once the client had agreed to the proposed work, our experts drained the excess AdBlue fluid to the correct level, ensuring none was wasted, setting aside the surplus to be safely discarded later.
Following this, our experts used their experience and knowledge to recalibrate and test the Mercedes GLC AdBlue system.
The tests confirmed everything was functioning as it should, leaving only the task of clearing the error codes from the system and performing a final check.
Using the Xentry software, our Mercedes experts reset the previous codes and scanned for any new ones. Thankfully, the results were clear, with the exception that the vehicle required a software update.
The update was performed and the vehicle was taken on a test drive to evaluate its performance.
The client’s Mercedes GLC operated flawlessly, with no warning lights or messages appearing on the Mercedes’s dashboard.
Our client was pleased to have their vehicle back so quickly and even happier to see it in complete working order, with no AdBlue warning lights present.
Summary
When our client brought their 2017 Mercedes GLC to us with concerns about multiple warning lights and messages on their dashboard, they needed a reliable and swift resolution.
After hearing about Shires Garage from a friend, they decided to bring their vehicle to us for a check-up. They were reassured by our strong online reviews and liked that we were Mercedes specialists.
Our Mercedes experts have a wealth of expertise working with all Mercedes models and can solve any problems your vehicle may have.
The client’s AdBlue issue was no different.
We solved the problem during the first visit using our in-depth 15-step diagnostic process. The client even received a better-than-dealership value.
As a result, our client drove away from Shires Garage satisfied, with a smile on their face, reassured by the quality and efficiency of our service.
Need help with your Mercedes? Call our team today and book your vehicle’s first-time fix.
