HELLA TECH WORLD NEWS

AUDI A3

Heat output too low

If a customer complains about the above error, this could be caused by contaminated engine coolant. Such contamination (rust, metal particles from the cast-iron block) blocks the small openings in the heat exchanger preventing flow. 

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MAZDA MODEL 5

Engine stalls

If a customer complains about the above problem, this could be caused by the fuel pressure control valve. Furthermore, occasional loss of power and poor engine cold starting performance may also be complained about.

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MERCEDES-BENZ CLK

Operating noise from the air conditioning compressor pulley

If there are complaints for these vehicles that noise is coming from the area of the air conditioning compressor, a possible cause is the air conditioning compressor pulley

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ALFA ROMEO 159

Power steering makes noises

If a customer complains about the above error, this could be caused by air that has entered the steering system. The noises are produced by cavitation and occur during the cold start phase in particular.

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Volvo XC 70 - Condensed water drain hose; Electrical booster heater short circuit

VOLVO XC 70

Condensed water drain hose
Electrical booster heater short circuit

On the above mentioned vehicles a blocked condensed water drain hose can cause a short circuit in the electrical booster heater.

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Mazda 3, 5 - Loss of coolant

MAZDA 3, 5

Loss of coolant

On the above vehicles (except for the Mazdaspeed 3), there is the possibility for coolant to leak out at the cylinder head flange. In case of coolant loss, special attention should be paid to the coolant flange gasket on the cylinder head.

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VW Caddy - Engine running out of round; Engine warning light on

VOLKSWAGEN CADDY

Engine not running properly; Engine warning light on

If the problem described above is determined in connection with the specified error code, the cause could be a contaminated throttle housing. In such cases the system cannot function optimally because of defective software for the engine control unit. This means that carbon deposits can form in the air intake system and in the throttle housing.

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KIA Sorento - Trailer stop light is not controlled by the towing vehicle when brakes are applied

KIA Sorento

Trailer stop light is not controlled by the towing vehicle when brakes are applied

If the problem described above is determined in conjunction with an activated cruise control system (Tempomat), the cause could be a faulty trailer control module. 

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BMW 3 SERIES - Poor air-conditioning system performance

BMW 3 SERIES

Poor air-conditioning system performance

With the above-mentioned vehicles it can happen that, when the weather is extremely damp or humid and when a journey is particularly long, the air-conditioning system will only blow out warm air. If the air-conditioning system is switched off for 10-15 minutes, it will then function normally again for a certain amount of time. 

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Ford S-Max/Galaxy - Headlamps fail when driving

FORD S-MAX/GALAXY

Headlamps fail when driving

If the above problem is detected when driving, a defective headlamp control unit can be the underlying cause. If the headlamps fail, proceed as follows.

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Citroen Jumpy IV, Spacetourer - Fastening the air conditioning compressor

CITROEN JUMPY IV, SPACETOURER

Fastening the air conditioning compressor

On the above vehicles, it is possible for the air conditioning compressor bracket to become loose and fall off. 

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Subaru Forester - Hissing noise (engine compartment)

SUBARU FORESTER

SUBARU FORESTER Hissing noise (engine compartment)
Loss of power
No error code

If the problem described above is detected, the cause could be a defect (split / crack) on the suction hose in the connection from the intercooler to the throttle housing.

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Renault Trafic - MIL (malfunction indicator lamp / engine warning light) comes on during longer downhill journeys

RENAULT TRAFIC

MIL (malfunction indicator lamp / engine warning light) comes on during longer downhill journeys
Fault codes: P0201 - P0204

If the fault described above occurs together with the listed error codes, a possible cause may be defective software in the engine control unit.

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Vauxhall Various Models - Insufficient engine power; Engine warning light comes on sporadically

VAUXHALL VARIOUS MODELS

Insufficient engine power Engine warning light comes on sporadically

If the error described above occurs in conjunction with the following list of fault codes, a possible cause is clogged/blocked EGR channels (exhaust gas recirculation channel).

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VW Caddy - Loud noise in the area of the engine compartment

VOLKSWAGEN CADDY

Loud noise in the area of the engine compartment

If loud (shrill) noises are heard coming from the engine compartment, a possible cause could be a malfunctioning of the high-pressure pump.

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Dacia Logan MCV - Loss of power, engine stalls

DACIA LOGAN MCV

Loss of power, engine stalls

If the above-mentioned problem occurs, the cause could be a contaminated throttle valve. The functioning (opening / closing) of the throttle valve can become impaired as a result of contamination (carbonization).

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Mazda 3 - Cooling performance of air-conditioning system inadequate

MAZDA 3

Cooling performance of air-conditioning system inadequate

If the cooling performance of the air-conditioning system in the above-mentioned vehicles is unsatisfactory, the installation of an air diffuser and an additional cable with resistor (for the evaporator temperature sensor) can remedy the situation. 

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