The exterior lighting on a vehicle offers a wealth of opportunities for customising the vehicle. Retrofitting LED rear combination lamps is a very popular modification. However, on modern vehicles it isn't enough to simply replace the lamps. In many cases the cables also need to be adjusted and the vehicle electric system control unit needs to be encoded accordingly.
If the error mentioned above is detected, one possible cause could be a faulty seal on the high-pressure safety valve. Defective seals cause the fuel to be diverted from the high-pressure side into the pump housing and fed into the low-pressure circuit.
Signal lights have an important safety function. They demonstrate deceleration and a change in direction of the vehicle, and make the vehicle more visible to other road users when it is dark or during poor visibility.
Poor engine running with increased oil consumption
If poor engine running with increased oil consumption is observed in the vehicle models mentioned above, then a possible cause may be defective crankcase ventilation. In some cases, a buzzing or whistling sound has also been heard.
Error code C1274 - "Acceleration sensor function faulty"
If the defect mentioned above is detected, it may also be related to a defective ABS sensor ring. The ABS control unit constantly compares and evaluates the values of the acceleration sensor and wheel speed sensors.
Engine stalls with slight pressure on the accelerator pedal after cold start
If no clear mechanical or electrical fault can be attributed to the error mentioned above during vehicle diagnostics, one possible cause is a software error in the engine control unit. In this case, the software version must be checked and updated if necessary.
ABS/ESP control units for braking and driving dynamics
Technical product information
The Electronic Stability Programme (ESP) has the task of preventing lateral swerving when cornering or when faced with critical situations, e.g. during extreme driving manoeuvres. The system specifically intervenes in the braking system and in the engine and transmission management and keeps the vehicle on track.
After the main headlamp bulbs have been changed on the vehicles mentioned above, there may be insufficient illumination of the road or oncoming traffic may be dazzled. This is especially true when using H7 bulbs.
Automatic systems, such as the automatic start-stop system are installed to reduce the fuel consumption and emissions. There are different versions and requirements depending on the vehicle manufacturer.
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Seat Ibiza (KJ)
Atypical steering behavior
If the problem described above is determined, the cause could be an insufficiently secured steering column. In this case, there is the possibility that the screw (see image) was not tightened to the specified tightening torque when the steering column was fitted.
The ever increasing demand for electrical power requires particularly efficient and powerful alternators and regulators. These should have the option of consumer and battery management. For this reason, hybrid regulators are increasingly being replaced by monolithic regulators with new functions: these are called multi-function regulators.
Should a loss of power occur in the above vehicles, an insufficiently fastened hose on the intercooler might be the cause. Whistling noises in the acceleration phase and simultaneous loss of motor power are frequently an indication for defects or faults in the area of the intercooler.
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The low beam is not functioning
The low beam can fail on the vehicle named above. Replacing the bulb and checking fuses F12 /F13 for the low beam did not solve the problem.
If these vehicles display an irregular coolant temperature value, the possibility of a bad ground connection to the thermostat housing bracket must be considered. To fix this problem, the ground cable (see figure) should be connected between the thermostat housing and the thermostat housing bracket.
The alternator supplies all electrical components in the vehicle with electricity. Should the alternator lose its full functionality, the electronics will fail after a certain period – the battery will no longer be charged, and the vehicle will no longer be roadworthy.
On these vehicles, if the exhaust warning light comes on and engine performance is poor, the following error codes may also be recorded. As preliminary analysis, check the turbocharger’s blow-off valve and the subpressure line.
If this problem is detected in the above-mentioned vehicle, a possible cause may be damage to the wiring harness of the ambient light/rain sensor. In addition, sporadic failures could occur in the exterior lighting function and in the wiper control caused by the rain sensor.
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Vehicle-specific diagnostic and repair information relating to a variety of fault symptoms.