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Why HELLA?
Decisive advantages of direct measuring systems
A direct tyre pressure monitoring system offers decisive advantages over indirect systems.
1. Precise pressure measurement
Direct TPMS systems measure the tyre pressure in each tyre individually and provide precise pressure values that are transmitted to the vehicle in real time. This enables more accurate monitoring compared with indirect systems based on calculated values.
2. Rapid warning
In the event of a sudden or gradual loss of pressure, the direct system immediately triggers a warning. The vehicle can inform the driver of the exact tyre at an early stage so that action can be taken quickly.
3. Detection of slow pressure losses
Direct systems also detect slow, continuous pressure losses that the indirect system may not recognise. This is particularly useful for detecting small leaks or creeping air loss.
4. Temperature measurement
TPMS sensors from FORVIA HELLA not only record the tyre pressure, but also the temperature of the tyres - important additional information in the event of overheating or increased strain, such as at high speeds.
5. Avoidance of false alarms
Unlike the indirect system, which is based on wheel speeds and which can trigger false alarms under different tyre conditions such as uneven wear or the combination of different tyres, the direct system is more accurate and more reliable.
Further information about our Tire pressure sensors
Universal parts – spare parts that are not vehicle-specific
The universal parts catalogue allows you to search for non-vehicle-specific products in the areas of lighting and electrics/electronics.
Universal parts catalogueVehicle-specific spare parts
Our online catalogue is designed to make your search for spare parts easier. For example, you can find the vehicle you are looking for by entering the manufacturer in our comprehensive list, type designation or engine code.
Vehicle-specific spare partsHella catalogue app
Our catalogue app lets you find HELLA products for passenger cars and commercial vehicles quickly and easily. Intuitive user prompting will lead you to the right result in a few steps ─ an easy, straightforward process.
HELLA AppsTechnical product information
In this database, you will find technical information about our products and specific vehicle systems – prepared by experienced technicians and mechanics.
Technical product informationFurther technical information
Basic Knowledge
Checking the starter - Causes of failure, troubleshooting
Everything you need to know about typical starter motor faults and how to rectify them - with instructions for testing and repair.
Reading time: 9 minutes
Basic Knowledge
Checking the alternator
Detailed solutions for problems with the alternator - from testing to troubleshooting, everything for your vehicle workshop.
Reading time: 8 minutes
Basic Knowledge
NOx sensor - troubleshooting and repair instructions
Everything about the NOx sensor: how it works, typical causes of failure, symptoms and fault diagnosis with the control unit.
Reading time: 8 minutes
Basic Knowledge
NOx-Sensor - Mercedes Benz
If a fault is diagnosed in the NOx sensor when troubleshooting an exhaust gas purification system, this can present a small challenge for a workshop.
Reading time: 7 minutes
Basic Knowledge
Checking an alternator regulator
Function and design of the overrunning alternator pulley explained - including installation instructions for the overrunning alternator pulley on the alternator.
Reading time: 12 minutes
Basic Knowledge
Lambda sensor testing and troubleshooting
Find out how to check and measure lambda sensors - with step-by-step instructions for fault diagnosis.
Reading time: 14 minutes
Basic Knowledge
Checking a high-pressure fuel pump
An overview of the structure and function of the high-pressure fuel pump - with information on fault diagnosis.
Reading time: 8 minutes
Basic Knowledge
Idle speed controller & actuator - function & check
Everything you need to know about testing and troubleshooting idle speed regulators: function, typical symptoms and repair tips for your workshop.
Reading time: 3 minutes
Basic Knowledge
Starter damage assessment
Faulty starter motor? Discover typical causes such as overloading or misfiring and how to repair damage effectively.
Reading time: 1 minute
Basic Knowledge
Alternator damage assessment
How to diagnose damage to the alternator: from corrosion and short circuits to bearing damage.
Reading time: 1 minute
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