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Expensive extra - the level control in the vehicle!

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Recently updated on October 4, 2023 at 02:25 am

Expensive extra - the level control in the vehicle!

[Update: 04.10.2023] This post was updatedto take more recent information into account. Level control can be ordered ex works as an option in many new cars, especially on the rear axle, and has numerous advantages. The air suspension systems are very functional because by simply changing the air pressure in the spring system, the spring performance can be adapted to a wide variety of conditions while driving. Level control can be particularly beneficial if you want to tow a trailer, caravan or similar. Various variants are possible: from modifying the springs to the original air suspension including a compressor and automatic level control in different adjustment levels. The coordinated systems ensure significantly more safety and greater driving comfort.

Level control: numerous advantages!

When the car's standard chassis is subjected to heavy loads, it quickly reaches its limits. In extreme conditions while driving (sudden dodge, spin at high speed, heavy lurching trailer), optimal suspension can mean the glaring difference between an accident or a safe, carefree ride.

Expensive extra - the level control in the vehicle!

Because with a retrofitted level control, the required travel can be adjusted manually or automatically, which means a sense of security enhancement. The advantages of an existing or retrofitted level control are optimal suspension behavior by improving the suspension travel. As a result, a lower cross-wind sensitivity and improved road holding can be achieved. In particular, under load, the braking distance is then significantly shortened by the optimized brake pressure, also decreases the tire wear front and rear, when the load ratio between the front and rear axles is balanced or optimized. The disadvantages are a higher weight, sometimes a costly retrofitting and of course the price.

Retrofitting level control: a lot of effort, but worth it

Expensive extra - the level control in the vehicle!

Retrofitting is not without effort, but it optimizes driving behavior and comfort, so the installation can be worthwhile, especially for frequent drivers or those who regularly use a trailer. However, the vehicle in which the system is installed should be in good condition - otherwise you will pay more if an expensive defect occurs shortly after installation. Innovative retrofit kits are available for some vehicles. However, the installation requires specialist knowledge and should only be carried out by a tuner who really knows his stuff.

Was this available from the factory? Then it's easier...

The most common method is to equip a car with level control that already has this option available from the factory as an optional extra (Mercedes E-Class, BMW 5er, Audi A6 etc.). This is where it is most possible to install/retrofit the level control in a TÜV-compliant and safe manner. The cables, brackets and software are often already installed in the vehicle. You can then activate the level control using the manufacturer's leveling struts, the corresponding activation in the control part of the vehicle and of course the connected compressor in the rear.

Expensive extra - the level control in the vehicle!

If this is not the case, it will be much more difficult. If you do not want to rely on a complete Airride air suspension, but only obstruct a level control rear, then the search for a third party provider will prove difficult. Although there are some high-quality complete packages for retrofitting including understandable instructions for installation, with the approval ability in this country, it does not always look good. And prices start at several hundred euros and can quickly reach thousands, if a particularly high-quality system is to be used. In particular, the electronics and sensors and their vote on the vehicle have their price. In addition there are the installation costs as well as the acceptance at the TÜV / Dekra.

as an alternative additional springs / level springs

Expensive extra - the level control in the vehicle!

1. How the level control works

  • What does a level control do? The level control plays a central role in vehicle technology by ensuring optimal suspension and damping in all driving situations. This is particularly relevant on the rear axle, where the level control ensures that the full suspension travel is maintained despite heavy loads and thus also improves the Safety and stability of the vehicle.

2. Identifying features of a level control

  • How do I recognize level regulation? Level regulation can be recognized when two Air bellows are present on the rear axle. Another indication is that the vehicle automatically adjusts its height when it is loaded and the ignition is switched on. If the vehicle automatically pumps itself into a horizontal position under load, level control is active.

3. Driving without active level control

  • Can you drive without level control? Yes, but with restrictions and possibly increased risk. When unloaded and driving slowly, it is possible to drive without active level control, but any obstacle, such as stones or bumps, poses the risk of bottoming out. In the event of any abnormalities or defects, the vehicle should be taken to one immediately Workshop to be brought.

4. Air suspension service life and maintenance

  • How long does an air suspension last? Air suspension parts should be on average 6 to 10 years ago or between 90.000 and 160.000 kilometers replaced to ensure optimal functionality. This is primarily due to the fact that the rubber dries out over time. If used frequently off-road or under extreme conditions, more frequent replacement may be necessary.

5. Detecting and repairing defective air suspension

  • How do you recognize defective air suspension? Defective air suspension can be noticed through various symptoms, including: Leaks are often the primary sign. A clear indication of a defective air suspension is if the vehicle is no longer level after a period of standstill (e.g. overnight) and a one-sided lower vehicle height shows. In such cases, immediate inspection and repair is advisable.

6. Types of air suspension systems

  • Manual level control: Allows the driver to manually adjust the height.
  • Automatic level control: Automatically adjusts height and suspension based on road conditions and vehicle load.

7. Advantages of level control

  • Improved driving dynamics: Especially with different payloads and different road conditions.
  • Increased security: Through more stable driving characteristics and optimized braking distances.
  • Comfort: The ride is made more comfortable even on uneven roads.

8. Disadvantages and challenges of air suspension

  • Costs: Both when purchasing as well as during maintenance and repairs.
  • complexity: Higher technical effort compared to conventional suspension systems.

9. Maintenance and care

  • Regular inspections: Necessary to ensure that all parts are in perfect condition.
  • Proactive exchange: To avoid defects, wearing parts should be replaced proactively.
  • Professional maintenance: A specialist should be consulted for professional maintenance.

10. Vehicle conversion

  • Retrofit sets: Many vehicles can be retrofitted with special kits.
  • Expertise required: Installation should be carried out by a professional to ensure safety and functionality.

11. Level control in different vehicle types

  • passenger cars: Commonly found in luxury vehicles and SUVs.
  • Commercial Vehicles: Trucks and buses often use leveling controls to handle variable loads.
  • Campers & RVs to Rent: For optimized driving dynamics and improved sleeping comfort when stationary.

12. Legal and manufacturer requirements

  • Authorization: Some changes or retrofits require acceptance and must be recorded in the vehicle documents.
  • manufacturer specifications: Some vehicle manufacturers prescribe certain maintenance intervals and measures.

13. Special features for electric and hybrid vehicles

  • Weight management: Due to the additional weight of battery packs, adapted suspension and level control are particularly relevant.
  • Energy Efficiency: An optimally adjusted chassis can help to minimize energy consumption.

Conclusion

Level control and air suspension are essential components in many vehicles, ensuring both comfort and safety, especially when driving with heavy loads. By the way, there is an alternative reinforced springs, They can achieve a similar effect and cost only a fraction. We hope that you the info report on the topic / term leveling (further names / keywords: Level controller, air suspension) from the area of ​​car tuning.

Expensive extra - the level control in the vehicle!

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About Thomas Wachsmuth

Thomas Wachsmuth - He has been an integral part of tuningblog.eu since 2013. His passion for cars is so intense that he invests every available penny in them. While he dreams of a BMW E31 850CSI and a Hennessey 6x6 Ford F-150, he currently drives a rather inconspicuous BMW 540i (G31/LCI). His collection of books, magazines and brochures on the subject of car tuning has now reached such proportions that he himself has become a walking reference work for the tuning scene.  More about Thomas

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