We have listed 15 common Audi faults and repairs, For those who have the same brand of vehicles, please refer to them, I believe that will be able to help take you.
The emergency warning light flashes and is accompanied by the door lock knob tripping.
- Model: Audi A6 (1.8L)
Troubleshooting and Diagnosis: After checking the footrest at the water stains, lifting the footrest found that the central door locking control unit was soaked with water, which was judged to be due to flooding caused by the central door locking control unit damage, sending out an error signal leading to the occurrence of the above failure. The reason for the water ingress under the foot mat is that the hole in the front fascia where the hood opening line passes through is not sealed properly, and water enters the cab through this hole when it rains or when the car is washed. The problem was solved by drying the foot mats and replacing the center door lock control unit.
Engine noise, heavy steering.
- Model:Audi A6(1.8L)
Fault phenomenon: After starting the engine work, it has a strange noise, and is accompanied by heavy steering.
The speedometer needle swing is too large.
- Model: Audi A6, (1.8L)
Fault phenomenon: The speedometer needle swings larger as the vehicle speed increases. Troubleshooting and diagnosis: the main factors affecting the speedometer needle swing are: the instrument itself, transmission gears, speed sensors, or line failure.
Fault phenomenon: The clutch makes a strange noise, which is sometimes aggravated after depressing the clutch pedal.
- Audi A6 (1.8L)
Fault diagnosis and elimination: according to the fault phenomenon and the part of the noise, judge the clutch internal friction place, the clutch and flywheel removed, the friction of the components of the analysis found to be the upper end of the spacer is not loaded into the groove caused by the re-installation.
The odometer does not work.
- Model: Audi A6 (1.8L)
Troubleshooting and diagnosis: This car started, but the speedometer occasionally does not go, a few days later, the speedometer pointer no longer moves, the initial suspicion is that the speedometer sensor failed. Can replace a few speedometer sensors, but the fault remains. Check the instrumentation and wiring are normal, and finally suspect that the internal reasons for the transmission. Remove the gearbox left half shaft end cover, found with the odometer sensor corresponding to the plastic transmission gear broken, and replace the fault eliminated. The cause of the failure may be due to poor quality or improper assembly of the plastic transmission gear, resulting in early damage.
Oil pressure alarm fault.
- Models: Audi A6 (1.8L)
Fault phenomenon: vehicle driving when the engine speed reaches 1500-2000 rpm, the engine oil alarm. The oil temperature gauge shows that the oil temperature is between 100-1200C, with the highest being more than 1200C Troubleshooting: a variety of repair methods are ineffective in the case of trying to use VAS5051 to change the speed limit adaptive value, the speed limit to 1750, the fault eliminated.
The vehicle suddenly stalled while driving.
- Model: Audi A6 (1.8L), Mileage: 900 kilometers
Fault phenomenon: the engine suddenly stalled while the car was traveling.Diagnostic process: This car is a new car, towed back to the factory after overhaul, found that some cylinders were without cylinder pressure, further disassembly, and inspection, found that the camshaft timing chain disconnected, the transmission was positioned near a piece of plastic, maybe a piece of plastic stuck in the transmission chain, resulting in the chain pulled off. In addition, the chain was broken, resulting in a change in the gas distribution phase, resulting in some of the valves of several cylinders being bent.
Air conditioning panel temperature display area digital display error.
- Model: Audi A6 (1.8L) commercial vehicles
Fault phenomenon: air conditioning panel, the temperature display area digital display error.Troubleshooting and diagnosis: This car’s air conditioning is normal, and with the VAS5051 in the automatic air conditioning electronic control system, and no-fault storage, the temperature display area shows a digital mess. Judge the fault should be in the temperature display, so replace a new air conditioning control unit. Replacement, the air conditioning panel on the number of regular flashes, according to the maintenance manual, connected to the VAS5051, into the automatic air conditioning electronic control system, select the basic setting function, enter the 01 channel, the air conditioning system to do the basic setup, everything is normal, troubleshooting.
Outdoor temperature display malfunction.
- Model:Audi A6(2.4L)
Malfunction: The outdoor temperature displayed on the instrument panel is always 390C.Diagnostic process: disassembled the meter, and then installed it again, the temperature display is normal, but at this time the gasoline gauge does not work again, again disassembled everything back to normal Cause of failure: poor contact connector.
Automatic transmission not working well.
- Model:Audi A6(2.4L)
Fault phenomenon: when shifting gears, the impact is large, poor acceleration, and the gearshift lever, regardless of which gear is placed in the instrument panel shows the gear is D Mileage: 700 kilometers.Troubleshooting and diagnosis: The suspected damage to the transmission control unit will be control unit removed, as shown in the figure, found that this transmission control unit is hot, replace a new control unit, according to the requirements of the correct coding, coding troubleshooting, the fault is an internal failure of the control unit, caused by the control unit heat, resulting in the transmission into the emergency state.
The engine stalled during driving and could not start again.
- Model: Audi A6 (2.4L)
Fault phenomenon: vehicle driving, water temperature is too high, the air conditioning does not work and the generator indicator light is always on, driving for some time after the engine stalled, can not be started again Methods: Replace the generator, the fault is eliminated.
ASR and EPC indicator lights are on at the same time while driving.
- Model:Audi A6(2.4L)
Fault phenomenon: The ASR and EPC lights on the instrument panel come on at the same time while the vehicle is traveling, and the maximum engine speed is 1200 rpm at this time. Troubleshooting and diagnosis: Connect VAS5051, query the stored faults, and learn that there are the following faults stored, fault code for.
1)18012, the engine control unit is damaged.
2) 17795 engine control unit damage
3) 18042 that the gas pedal position sensor signal is too large according to the test results, the preliminary judgment is that the engine control unit is damaged after replacing the engine control unit, and the fault is eliminated.
Glass lifter malfunctioning fault.
- Model:Audi A6(2.4L)
Diagnostic process: Troubleshooting with VAG1551, found that there are several involved in the door lock switch faults, and for the occasional fault, the door locking system of the various connectors is carefully checked and cleaned to eliminate the fault storage, and the fault is eliminated.
Poor acceleration with automatic transmission.
- Model:Audi A6 (2.4L)
Cause of the problem: Routine inspection of the oil level of the gearbox oil found that the gearbox lacks too much oil, after replenishing to the standard oil level after the test vehicle fault was eliminated.
Vehicle Acceleration Failure.
- Model:Audi A6 (2.4L)
Failure phenomenon: the car in the driving acceleration weakness. Diagnostic process: gasoline pressure gauge to measure the gasoline pressure, the result is insufficient gasoline pressure.
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