AdBlue’s SCR system is an advanced emission control technology which injects a liquid reducing agent via a special catalyst in the exhaust stream of an engine. The source of reduction is typically automotive-grade urea, which is also known as Diesel Exhaust Fluid. When this fluid is released, it creates a chemical reaction which converts nitrogen oxide into harmless nitrogen, water...
Xenons4U Automotive Blogs
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Mercedes-Benz Auto Lights Inoperative Malfunction Explained and How to Fix it
Your pride and joy, your means of getting around and probably one of the most expensive things you own, it can be alarming when things go wrong with your Mercedes-Benz. Of all the things that could happen unexpectedly, getting the Auto Lamp Function Inoperative or Auto Lights Inoperative error message pop up on your dashboard can be one of the... -
How Permanently Disable ECO Start/Stop function on Mercedes-Benz cars
For many Mercedes-Benz owners, the ECO start/stop facility has been a very frustrating subject and there have been endless requests for a way to permanently disable it, without much success. A temporary fix will last for the duration of a journey but once the car is turned off and then back on again, the ECO start/stop function is restored. Understandably... -
BMW Seat Mat Occupancy Airbag Sensor Malfunction Bypass
Modern BMWs are plagued with a faulty airbag light indicator regularly rearing its ugly head thanks to a faulty passenger seat mat sensor. It's a frustrating problem, and the only way to properly rectify the solution is to replace the seat mat with a new part. Many owners opt to fit what is known as a BMW seat mat occupancy... -
Mercedes-Benz: The TPMS Tyre Pressure Monitor System Inoperative Explained
The TPMS system explained: A tyre pressure monitoring system is one of the great evolutions in modern mechanics. It is easy to get both a direct or indirect monitoring system installed, even if it is not supplied at a factory level for your model. A typical tire pressure monitoring system works via an electronic system which monitors the air pressure... -
BMW X3 F25 LED Tail Light Repair Guide and Malfunction Explained
LED lighting is largely becoming the norm on new cars, especially those towards the top end of the market. The added safety features, electrical efficiency, and cosmetic enhancements appear to make them a no-brainer. And whilst the benefits are undeniable, unfortunately, these latest must-have features are not without their drawbacks. Just ask owners of the BMW X3 F25 SUV. The... -
How to lower Mercedes-Benz with an Airmatic Air Suspension
There are plenty of benefits to the OBD2 module for the Mercedez-Benz active airmatic suspension, so what’s different about this system? The Airmatic is a cohesive suspension system that provides a level of responsiveness hitherto not seen in the M-B world. With some pretty important distinctions from the typical steel-spring suspension set-up, it also works as a team with the... -
U029D and U029E Lost Communication with NOx Sensor Error Codes Explained
U029D and U029E NOx sensor codes: What ‘lost communication’ means So you have a problem with your NOx sensor. There is no need to panic, there is a simple explanation. The key is to take a deep breath and consider a few simple solutions. Let’s start with the explanation. The NOx sensor error codes described as U029D and U029E mean... -
Mercedes-Benz top up coolant see owner's manual warning message
The warning message So a warning message has popped up on your screen, that reads something like this: “Top-up coolant: see owner’s manual for warning message”. Don’t panic, it is as simple as it sounds. It is just time to top up your coolant. Here, we run through a few top tips for topping up your Mercedes with the specially... -
P0470 P0471 P0472 P0473 and P0474 Exhaust Back Pressure Sensor Error Code Explained
P0470 P0471 P0472 P0473 and P0473 exhaust back pressure sensor error codes are a fault codes or Diagnostic Trouble Code (DTC) that indicates your car's electrical circuit is malfunctioning for exhaust pressure area. This could be due to either an electrical or mechanical issue. To alert you that this fault has occurred, the check engine light or an error message...