Xenons4U Automotive Blogs

  • 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...
  • 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...
  • 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...
  • 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...
  • 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...
  • 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...
  • 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...
  • Mercedes-Benz Refill AdBlue See Owner's Manual warning message

    What is AdBlue? If you own a diesel car that has been built in the last few years, chances are you need to use AdBlue. AdBlue is an additive that reduces NOx emissions by being sprayed into the exhaust gasses. Multiple Mercedes-Benz models such as the E-class W212 S212 A207...
  • What is Mercedes-Benz attention assist and how does it work?

    Drowsiness is one of the biggest safety concerns for modern drivers. As our driving experience becomes increasingly automated, we find ourselves with less to do at the wheel, making it all too easy for tiredness to take over. Modern motorways are often straight and featureless, giving us ample opportunity for...
  • P11CC P11DC P11DB and P20EE NOx sensor error codes explained

    The NOx sensor is an integral part of your engine, although it may not be the most well-known component. But what can you do when a management engine light MIL pops out on your dash and after doing diagnostics it points and shows NOx sensor related error codes? We take...

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