Service und Beratung

ALLIGATOR

Service & Consulting

Service and Consulting

In the service area we answer important questions about tire pressure monitoring, our sens.it® sensors and programming devices, as well as the training and programming of sens.it® sensors.

You can download our current ALLIGATOR catalogue, flyers and brochures, as well as our latest vehicle cover list and the software for your programming device with just a few clicks in the download area.

In our FAQ section you will find the appropriate answers to the most frequently asked questions about TPMS and our sens.it® sensors.

All about the Tyre Pressure Monitoring System (TPMS)

General information about TPMS

 

What does TPMS mean?

TPMS is an abbreviation for Tyre Pressure Monitoring System (TPMS). It continuously monitors tire pressure and automatically indicates a loss of pressure in one or more tires and notifies the driver via a warning message on the display.

 

Why is tyre pressure monitoring in a vehicle useful?
The aim of this automatic tire pressure monitoring system is very simple: TPMS increases driving safety and thus prevents accidents caused by incorrect tire pressure.

 

Why does insufficient tyre pressure affect driving safety?

If the tire pressure is too low, the braking distance is automatically increased, cornering can be severely affected and the temperature of the tires is significantly increased.


The advantages of TPMS at a glance:

  • Prevention of increased fuel consumption caused by non-optimal tyre pressure.
  • Reduction of tyre wear caused by higher rolling resistance and CO2 emissions.
  • Clear and transparent display of tyre pressure problems for the driver, thus enabling quick and early rectification of the problems.
  • Elimination of manual air pressure control by the driver.

 

This is what the law says about fitting vehicles with TPMS:

Since 1 November 2012, all new cars and motor homes sold in the EU must be equipped with an TPMS.

Since November 1, 2014, the following also applies: All passenger cars and motorhomes registered in the EU for the first time must be equipped with an TPMS!

What must TPMS be able to do?

 

At the latest at the general inspection, things get serious: If a non-functional TPMS is found during the general inspection, this is considered a minor defect according to §29 StVZO. The vehicle owner is requested to remedy this defect immediately.

 

Features of the TPMS according to EU law:

  • Warning in case of loss of pressure of a single tyre (within 10 minutes):
    20% lower than operating pressure (Pwarm) at 1.5 bar
  • Warning when all four tyres lose pressure (sudden and gradual loss):
    20% lower than operating pressure (Pwarm) at 1.5 bar
  • Detection of pressure loss at speeds of 40 km/h up to the maximum driving performance of the car

Direct and indirect TPMS

 

A basic distinction is made between direct and indirect tire pressure monitoring systems.


Direct systems measure and archive air pressure data extremely precisely by means of sensors which are installed at the valves in the tire. The data is transmitted almost in real time by radio to the vehicle's on-board electronics and thus to the driver on the display.


Indirect systems use the so-called ABS system. This system determines the air pressure loss with the help of the rolling circumference of the wheel. However, these ABS systems have very narrow tolerances by law and, unlike direct systems, are not suitable for all vehicles.