Car horn replacement

Useful information and valuable tips regarding the replacement of horns, with the Audi TT/RS and Grand Cherokee serving as examples

Depending on the field of application and on the operating conditions, the horn mounted onboard, also known as a klaxon, can have too weak a sound. In such cases it is useful to install a more powerful horn in order to be able to produce an adequate warning sound in the event of a dangerous situation. How to implement this modification and which points have to be considered in the process can be found on this website using Audi TT/RS and a Grand Cherokee jeep as examples.

Read more

Diagnosing brake problems

Useful and valuable repair tips regarding damage assessment on brake discs, brake pads as well as wheel suspension and steering

Damaged or improperly function components in the wheel suspension or steering can affect not just the driving characteristics but the braking characteristics of the vehicle as well. If unusual noises, vibrations or unstable driving characteristics are detected during braking, the potential cause can stem from different vehicle components.

Read more

Volkswagen Golf VI

Functional defect of cabin fan during low outside temperatures

Should the vehicles mentioned above experience a defect of the cabin fan, the possible cause might be frozen water inside the fan enclosure.

Read more

Audi A4/A5/A6/A7/Q5/Q7/TT

Loss of power in heating/air-conditioning systems

Should the vehicles mentioned above experience a loss of heating and/or air-conditioning power, water entry into the wiring harness may be the cause.

Read more

Mercedes Benz G-Class

Poor braking function of rear-wheel brake

If the problem mentioned above is detected, this may be due to a torn rear axle brake caliper. In worst case scenario, the rear-wheel brake might fail.

Read more

Adaptive Cruise Control

Adjusting ACC sensor

Here you will find useful knowledge and important tips regarding the topic of Adaptive Cruise Control (ACC) and/or automatic ACC distance control as well as the calibration of ACC radar sensors.

Read more

Overview of driver assistance systems

Useful information on driver assistance systems - in glossary format

The following overview, appearing in alphabetical order, lists the most common driver assistance systems including short descriptions for each one.

Read more

Audi Q5

Noise from air-conditioning line

The vehicles mentioned above may experience clattering noise coming from the engine compartment. If this happens, special attention should be paid to the lines of the air-conditioning system.

Read more

Ford Galaxy and S-Max

Failure of front headlamps

On the vehicles mentioned above, customers have complained that the front headlamps fail while driving. The reason for this problem is faulty software for the headlamp module.

Read more

BMW 7 Series E 65/66

Front and rear axle brake system squeals when applying light braking force

If the above fault occurs, it may be associated with the brake lining wear indicator.

Read more

Citroen C5/C6/C8/Crosser

Starting behaviour and engine performance are inadequate, and the engine control light comes on

In this case, the fuel filter may be clogged. The cause may be the formation of a muddy mass due to the use of fuel additive Eolys 176.

Read more

High-Carbon Brake Discs

Ahead of the curve

Our product range has been expanded to include high-carbon brake discs – an impressive addition that will ensure our recipe for success is upholded.

Read more

K-LED Blizzard

Very high warning effectiveness, Modern design, Flashing light function

The K-LED Blizzard is the successor generation to the popular and widespread K-LED FO. These can be replaced like-for-like. The new generation combines its predecessor's popular design with the latest LED technology.

Read more

Brake calipers

Core-free new parts

FEATURES & BENEFITS. All products undergo a 100% final inspection after production is complete. Core-free new parts. Easy handling thanks to dispensing with core deposit processing. No capital tied up with core deposits.

Read more

Volvo XC 90 II

Temperature control of air-conditioning system

You can always depend on wiper blades from HELLA. The rubber lips of the blades are coated with graphite so that they can be subjected to the most intense of loads on a continual basis, and the design minimises aggravating wind noise.

Read more

Which bulb is the right one?

Our bulb configuration tool helps you to quickly and easily find the right bulb

A few clicks will take you to the right bulb. Simply by specifying the appropriate vehicle and model you can hone in on the products we offer for that particular car. Of course we don’t just offer product data, but also additional information for the various light bulbs and their technology.

Read more

"Starting aid" repair notes

Jump starting using jumper cables

If the starting speed of a motor vehicle is not sufficient to start the engine due to a weak battery, the vehicle can be started externally using an external battery and jumper cables.

Read more

Wiper Blades

For Passenger Cars, Trucks and Agricultural Vehicles

You can always depend on wiper blades from HELLA. The rubber lips of the blades are coated with graphite so that they can be subjected to the most intense of loads on a continual basis, and the design minimises aggravating wind noise.

Read more

Hot Wipers!

Read more

Opel Astra J

Charge signal lamp flashes

A complaint has ben made that the charge signal lamp flashes in the vehicles specified above. An activated logistics mode can be responsible for this problem.

Read more

Peugeot 307 HDI

Poor acceleration performance

If the vehicle listed above demonstrates poor acceleration performance in conjunction with flapping noises in the vicinity of the splash wall, this may be caused by a defective intake manifold.

Read more

Opel Astra J

Compressor leakage

The above-mentioned vehicles can experience a compressor leakage. This is mostly noticeable by escaping oil/dye. To fix this problem, the compressor must be exchanged for a modified version.

Read more

Air-conditioning high-voltage compressors

General Information, Function, Specialist expertise, Maintenance of hybrid vehicles

Vehicles with full-hybrid technology use high-voltage compressors that are not dependent on the running of the combustion engine.

Read more


Workshop + music = a perfect duo! Look how workshop heroes work.

We've always known it – HELLA products have a very special effect on people. Find out for yourself: turn your speakers on and go for it!

Watch video here

Lexus GS300/GS350

Condensation drain

On the above vehicles, a blocked condensation drain in the air-conditioning system can lead to an ingress of water in the vehicle interior.

Read more
Specific vehicle repair information


Vehicle-specific diagnostic and repair information relating to a variety of fault symptoms.

To the repair instructions
HELLA online training


Take advantage of the HELLA online training to refresh and expand your knowledge. Learn about the HELLA core competency areas at your own pace.

To the online training
Campaigns and special offers


Here you will find an overview of the current campaigns and special offers from HELLA.

To the campaigns
Online product catalogue


Quick, clear and efficient – Find the right HELLA Product!

To the online catalogue
New products


Here you can find all information about new products, product ranges and extensions from HELLA.