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Legal requirements and market potential

Stipulations of EU regulation ECE-R 64

All vehicles in model classes M1 and N1 registered for the first time as of 1st November 2014 must be equipped as standard with a tyre pressure monitoring system (TPMS). This relates specifically to passenger cars, mobile homes and commercial vehicles with a total weight of less than 3.5 t and licensed to carry up to 8 occupants. Road safety is one of the reasons for the new directive – tyre leaks are recognised quickly and automatically by the sensor. Another reason is that correctly inflated tyres reduce fuel consumption and hence CO2 emissions.

What are the minimum requirements to be observed?
ECE-R 64 stipulates the following ­minimum requirements for TPM systems:

  • A warning must be provided in the event of a pressure loss of 20 per cent
    or a tyre pressure of less than 1.5 bar.
  • A defective tyre must be detected within 10 minutes. If all four tyres are affected, the time must not exceed 60 minutes.
  • A defective system component must be displayed within 10 minutes.
  • The TPMS must function from an average speed of 40 km/h.


What must the workshop pay attention to?
The replacement of TPMS wheel sensors is a source of additional business and greater customer loyalty for independent workshops and tyre services. The number of new cars with TPMS will increase dramatically and thus also the demand for winter tyres for vehicles which then have to be retrofitted with TPMS. Workshops and tyre services therefore have to adapt to this new situation.


The advantages for motorists
Tyre pressure monitoring systems make a significant contribution to road safety as it is not unusual for accidents to be caused by defective tyres. Thanks to the TPM system, drivers can be safe in the knowledge that the system will reliably monitor tyre pressure and promptly recognise defective tyres. However, it is not just a matter of safety. Motorists also benefit from optimised vehicle dynamics and a higher level of ride comfort thanks to reduced tyre noise. At the same time, TPM systems also save drivers money by reducing tyre wear and cutting fuel consumption.

TPM systems

Which methods are available for measuring tyre pressure?
Modern vehicles must be fitted with an integrated direct or indirect TPMS. The purpose of such systems is to constantly monitor the tyre pressure on motor vehicles and thus make motoring safer. A warning signal immediately informs motorists of a pressure loss in one or more tyres. What are the differences between the two types of system?


Indirect system
The indirect measurement TPM system using ABS/ESP fulfils all the specifications of ECE-R 64. In comparison to the active measurement system using radio sensors, however, it is currently slower and less specific. The costs for the vehicle owner are likely to be lower in this case, but diagnosis or resetting is necessary on changing tyres. Ask your specialist dealer.

  • Slow, imprecise method
  • No additional components needed
  • No specialist knowledge required
  • Low-cost alternative



Direct system
The direct measurement system using radio sensors fulfils all the specifications of ECE-R 64. Compared to the passive measurement system, it is currently faster and more specific. The wheel sensors fitted should be read out by your specialist dealer with a TPMS diagnostic device every time a tyre is changed. System adaption is required on replacing the sensors or changing the tyres. Ask your specialist dealer.

  • Fast, accurate method
  • Detection of gradual and sudden pressure loss
  • Additional tyre service expense
  • Expert knowledge required on changing tyres



Programming/diagnostic device, tyre pressure monitoring system
The AirGuard is a pre-service hand-held device. It allows work to be carried out directly on the vehicle whilst offline. The vehicle database, with a coverage of 80-90 %, is stored in the device itself. Updates are available free of charge from our website. The AirGuard is able to read out all sensor types found on the market. Then, it is able to automatically or manually duplicate the read data to the Herth+Buss wheel sensors. Programming a new sensor ID and wireless reprogramming of the sensor ID of activated Herth+Buss sensors while still installed is also possible.

  • reading out of Herth+Buss/third-party sensors using the built-in database
  • programming of the Herth+Buss wheel sensors using the built-in database
  • free updates
  • vehicle coverage of 93 per cent
  • vehicle data stored in the device itself



Part number


Tool set, tyre pressure monitoring system

The SensoFix is a perfectly coordinated, 4-part tool set with pre-set torques. It facilitates the optimum tightening of Herth+Buss wheel sensors, precise valve fixing and the optimum transmission of force. The tool set contains the following: Three torque wrenches with a pre-set torque of 4 Nm, 2 Nm and 0.25 Nm for tightening the valve nut, valve screw and valve set, plus a valve bracket that fixes the valve and secures it against twisting during assembly.

  • pre-set torques
  • 4-piece tool set
  • precise valve fixing
  • optimum transmission of force
  • high-quality tools

Part number
   Tool Set, tyre pressure monitoring system90950001 
   Torque Wrench, tyre pressure monitoring system90950001012 

Wheel sensor, tyre pressure monitoring system
Herth+Buss wheel sensors can be used in all vehicles that have a tyre pressure monitoring system installed as standard. The AirGuard is required to programme and align these to the respective vehicle. This process only lasts between 5 and 15 seconds per sensor. One bonus of the Herth+Buss wheel sensors: the original serial/ID number can be copied from the "old" sensor to the new one, or can be reassigned. In addition, the wheel sensors can be rewritten, and can be used in aluminium and steel rims. The sensors can be ordered individually and are supplied with the complete valve in standard silver. A valve repair kit is also available, as are replacement valves in silver and black.

  • one for all: optimum stockage with just one universal wheel sensor
  • valves with adjustable angles
  • for steel or aluminium rims
  • certification up to 250 km/h
  • battery running time: 3 – 7 years



Part number

   Wheel Sensor, tyre pressure monitoring system
   Wheel Sensor, tyre pressure monitoring system70699434

The OBD-II module is an expansion to our TPMS AirGuard programming and diagnostic device. It may only be used together with the AirGuard. Updates are carried out via our website by entering the module serial number, which can be found on the rear side of the module, and using our update software.

The OBD-II module has two functions:

  • read-out of sensor ID from the vehicle control unit
  • overwriting the sensor ID in the vehicle control unit (OBD learning process)
  • includes Hyundai, Kia, Peugeot, Citroen, Renault




Part number
   OBD adapter, tyre pressure control system



Toolbox, TPMS
The foam insert has recesses to exactly fit all the components of the AirGuard concept. The perfect way to store the complete AirGuard concept in one case. Everything is instantly to hand and ready for use.


Part number
   toolbox, TPMS



Which system do vehicle manufacturers tend to opt for?

Vehicle manufacturers tend to opt for the active measuring system using radio sensors. By comparison, this is quicker and more precise than the passive measuring system using ABS/ESP.



Which languages are programmed on the AirGuard?

German, English, French, Spanish and Slovene are currently available. If there is a demand for the addition of further languages, they will be provided via an update on the website.

Can sensors from other manufacturers also be adapted with the AirGuard?

The AirGuard concept is a self-contained system. Other manufacturers can only be read out. Programming third-party sensors is not possible.

What happens if the desired vehicle model can not be displayed?

If the vehicle model is not present, the user can revert back to an older model. Please always check whether you have installed the most recent update at

Is the Herth+Buss wheel sensor available as a retrofit solution for vehicles without TPMS?

No. Herth+Buss wheel sensors should only be used for vehicles fitted with TPMS by the manufacturer.



How long is the service life of a battery installed in the sensor? Can the battery be replaced?

The service life of the batteries in the sensors is 3 to 7 years. The battery is firmly encapsulated in the sensor and can therefore not be replaced.

Can the vehicle data in the sensor be deleted?

No. They can be overwritten any number of times.

Can the sensor be adjusted to fit any rim?

Yes, the angle adjuster on the sensor can be set as desired.

What are the functions of the module?

The device has two functions:

  • Reading of the ID stored in the vehicle control unit
  • Writing of new IDs into the vehicle control unit



How is the module operated?

The module can only be operated by connecting it to our programming/diagnostic device, TPMS AirGuard. It is a supplementary unit for this.



How are the module data updated?

Updating is performed as for our programming/diagnostic device, TPMS AirGuard by way of our home page.



What do the updates cost?

The updates are free of charge.



AirGuard & OBD II Update
AirGuard & OBD II Update


Version 1.41 02/2018

Tutorial: AirGuard Update
Tutorial: AirGuard Update

Our video tutorial will help you
with updating your AirGuard.

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