Maintenance terms
The following maintenance regulations apply to our Audi-100:
Technical inspection with a simultaneous check for toxicity of exhaust gases - once a year. Technical inspection with additional work every 30,000 and 60,000 km traveled. Change the oil if the car travels more than 15,000 km per year, thereby exceeding the annual inspection interval.
For those who run into the year big runs (over 15,000 km) and uses the services of a workshop to carry out regular checks, unfavorable «intersections». At 20,000 km per year, an oil change should already be carried out before the annual check. For someone who drives 25,000 km per year, it is better to carry out a 30,000 km check after the expiration of the one-year interval. Well, those who do everything themselves can decide, if necessary, what and when they want to do it. Audi drivers need to change the brake fluid every two years.
Self-maintenance plan
The maintenance plan published in this book is also based on Audi recommendations, and the sequence of individual points was compiled especially for those who like to do everything themselves. At the very beginning you will find «Constant checks», which cannot be accommodated in any kilometer interval.
So that you don't have to keep flipping the book back while you work, we have placed a maintenance plan at the end of the book on the inside cover. This way it will be constantly in front of your eyes, and you will be able to do the work point by point.
Who can do the work?
You can carry out almost all maintenance work on the Audi-100 yourself. Our tables will show you the right way to do this:
○: For a car enthusiast, the path is clear. You can do this work yourself, armed with the knowledge from this book, and thereby save money.
□: The work is not hard, but in most cases you may not have the right tools at hand.
△: Stop, let the workshop work here. Special tools or devices are required. The amount of time spent does not justify itself, because the workshop works much faster or special, deeper knowledge is needed to complete the work.
Cases of limited warranty service
If your Audi 100 is less than one year old or the engine has been replaced, the manufacturer requires that maintenance work be carried out on time at one of Audi's authorized workshops. Otherwise, you may be denied support even for justified warranty cases. And whoever wants to take advantage «mobility guarantees», must appear at least once a year in the workshop.
Diagnostics in the Audi workshop
Troubleshooting is often the most expensive thing to pay the shop bill for, especially when it comes to phenomena that occur only from time to time. Therefore, what could be more accurate than checking the neural connections of a car in order to immediately find out in this way about the problem in all its depth?
Numerous control units installed in the Audi-100 are capable of self-diagnosis. In this series, we can name the control units for the injection system, the ignition system (5-cylinder models), anti-lock braking system, EDS (electronic differential lock), airbag or air conditioning. Such a control unit is able to diagnose if it has a built-in fault memory that records all failures during the operation of the vehicle. The control unit can be connected to the diagnostic unit in the workshop by connecting to the central connector for connecting the diagnostic center on the car's central distribution box.
The correct use of the possibilities of interrogating the memory of the fault memory should proceed as follows: the driver arrives in his Audi to the workshop, and before starting any work, the car is connected to the diagnostic unit. A complete fault report is printed from it, which contains the data of the fault memory of all control units capable of diagnosing. Testing is carried out by an auto mechanic according to the program, reading the instructions on the display. The end result is the exact definition of components and assemblies to be repaired.
Regulator Diagnostics
A decisive factor for a quick and correct repair is also the function of the diagnosis system, which Audi calls the control unit diagnosis. This means that electrical functions such as actuating the fuel pump relay, the solenoid valve for the activated charcoal reservoir or the idle speed control valve can be connected to the diagnostic unit. In this way, you can definitely find out whether the cause lies in defective wiring or the unit itself does not function (its functioning, not drowned out by the sound of the engine, is usually well audible). This greatly simplifies troubleshooting.
Interrogation of the fault memory
During maintenance, interrogation of the fault memory is included in the scope of work performed. Thus, the workshop can get an idea of possible malfunctions in the operation of the electronic components of the car, and without asking the client in detail.
The one who is engaged in maintenance himself can refuse this item during work, since he observes the car in the course of daily operation - that is, he should have noticed possible malfunctions.
Self-diagnosis
The times when car drivers, as was the case with the Volkswagen «beetle», could do all the work on the car themselves, they are finally a thing of the past. But this does not mean at all that self-repair of your own car is completely impossible. Quite the opposite. It is only necessary to slightly change the method of work and use modern technology. So, for example, the results of a fault memory survey conducted by a workshop can be used in work at home. The following example should illustrate this idea.
Example:
- The 85-horsepower Digifant injection engine detects insufficient power at full load. He is not always so weak, but only from time to time.
- As experienced amateur mechanics, we have already checked the car on the points given in this book in the section «Help with malfunctions of the Digifant injection system».
- In the normal case, we would have probably found the fault by now, but the fact that it only appears from time to time makes it difficult to find.
- This example shows a distinct advantage of the fault memory, because it stores faults that occur from time to time.
- Fault memory polling result: throttle angle sensor defect (loose contact).
Service convenience
In order to more conveniently carry out inspection and maintenance in the engine compartment, the hood of the engine compartment of the Audi-100 can be raised higher. To do this, with the engine hood open in the upper part of the stop, press the red button inward and fold the hood up to the stop.
Before closing - the hood must be returned to its normal position.
There is a white sticker under the rubber mat in the trunk, which contains all the data that is important, for example when buying spare parts. Such as:
- Vehicle code.
- Vehicle identification number.
- Symbol of the engine.
- Transmission symbol.
- Paint code.
- Internal equipment code.
- Additive Codes (etc., as well as the type of running gear).
A copy of this sticker is also in the car owner's service book in the document pocket in the car (instruction manual, etc.).
Vehicle identification number
Vehicle identification number (before: chassis number) important for vehicle registration authorities and insurance companies. In addition, it is necessary for the purchase of spare parts. In order for you to know what is hidden behind the letters and numbers, we have placed a brief transcript below. The combination of numbers / letters means:
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