The Hidden Factors Affecting ADAS Calibrations: Fuel and Tire Pressure

The Critical Link

Collision repair is about more than just straightening metal and repainting panels; it's about restoring a vehicle to its pre-accident condition, which includes its safety and performance. For modern vehicles packed with Advanced Driver-Assistance Systems (ADAS), this means ensuring precise calibrations of sensors and cameras. However, something as seemingly simple as fuel levels or tire pressure can throw these calibrations off. This article explores why and how, offering insights for collision center owners.

Fuel Weight

A full tank of gas can add a significant amount of weight to a vehicle. This additional weight affects the vehicle's ride height and center of gravity. ADAS sensors and cameras, often mounted at specific points on the vehicle, are calibrated to work optimally at a certain ride height and center of gravity. If the vehicle is calibrated with a low fuel level and then filled up, the change in ride height can alter the sensors' 'view' of the road, leading to inaccurate readings and potentially compromising ADAS functionality.

Tires Are More Important Than You Think

Tire pressure affects more than just fuel efficiency and tire wear; it also influences a vehicle's ride height. Underinflated tires lower the vehicle, while overinflated tires raise it. Even slight changes in ride height can affect the alignment of ADAS sensors and cameras, leading to inaccurate readings and potential ADAS malfunctions.

OEM Recommendations

Recognizing the impact of fuel levels and tire pressure on calibrations, many Original Equipment Manufacturers (OEMs) explicitly state that vehicles should be calibrated with a full tank of gas and tires inflated to the correct pressure. These recommendations are not arbitrary; they ensure that the vehicle is calibrated in the same condition it will be driven in, maximizing the accuracy and reliability of ADAS.

The Collision Center's Role

Collision centers play a crucial role in ensuring vehicles are properly calibrated after repairs. By adhering to OEM recommendations regarding fuel levels and tire pressure during calibrations, collision centers can ensure that ADAS functions are restored to their pre-accident performance, enhancing vehicle safety and customer satisfaction.

Key Takeaways

• Fuel levels and tire pressure can significantly impact ADAS calibrations.
• OEM recommendations regarding fuel levels and tire pressure should be followed during calibrations.
• Properly calibrated ADAS systems enhance vehicle safety and customer satisfaction.

Additional Considerations

• Vehicle Load: In addition to fuel levels, other factors that affect vehicle load, such as cargo or passengers, can also impact calibrations. It's essential to consider these factors when performing calibrations. Any heavy objects should be taken out of the vehicle prior to calibration.
• Documentation: Document all calibrations performed, including fuel levels and tire pressure. This documentation can be helpful in the event of any future issues, and to mitigate any potential liability.

Conclusion

Ensuring accurate ADAS calibrations is critical for restoring a vehicle to its pre-accident condition. By understanding the impact of fuel levels and tire pressure on calibrations and adhering to OEM recommendations, collision centers can be sure that they are calibrating correctly.

Remember: ADAS technology is constantly evolving. It's crucial for collision centers to stay up-to-date on the latest calibration procedures and equipment to ensure they can properly service modern vehicles.

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