Audi Q5 2.0 TFSI quattro / Audi Ku5, 5DV SUV, 211 HP, 7АКПП, 2008 - 2012 - insufficient oil pressure (warning light is on)

Audi Q5 2.0 TFSI quattro 5dv. SUV, 211 HP, 7АКПП, 2008 - 2012 - insufficient oil pressure (the indicator is on)

Insufficient oil pressure (low oil pressure indicator is on)

Reasons for a drop in oil pressure

There is a light on the dashboard that signals an emergency oil pressure in the engine. When it lights up it is a clear sign of a malfunction. We will tell you what to do if the oil pressure lamp lights up and how to fix the malfunction.

The oil indicator light can come on for two different reasons: either low oil pressure or low oil level. But what exactly the oil light on the dashboard means, only the instruction manual will help to find out. It will help us that, as a rule, budget cars do not have a low oil level indicator, but only low oil pressure.

Insufficient oil pressure

If the oil can light comes on, this means that there is insufficient oil pressure in the engine. As a rule, it lights up for only a few seconds and does not pose a great threat to the motor. For example, it can light up when the car rolls strongly in a corner or when cold starts in winter.

If the low oil pressure light comes on due to a low oil level, then this level is usually already critically low. First of all, when the oil pressure light comes on, check for the presence of engine oil. If the oil level is below normal, then this is the reason for the lighting of this lamp. This problem can be solved simply - you need to add oil to the desired level. If the light goes out, we rejoice, and do not forget to top up the oil in time, otherwise it can turn into serious problems.

If the oil pressure light is on, but everything is in order with the oil level on the dipstick, then another reason why the indicator could light up is a failed oil pump. It does not do its job of circulating enough oil in the engine lubrication system.

In any case, if the oil pressure or low oil level light comes on, the car must be stopped immediately by pulling over to the side or to a safer place and turned off. Why stop right away? Because, if the oil in the engine has dried up significantly, then the latter can stop and break with the prospect of very expensive repairs. Remember that oil is very important to keep your engine running. Without oil, the engine will fail very quickly - sometimes in a matter of minutes.

This situation also occurs when the engine oil is changed to a new one. After the first start, the oil pressure light may come on. If the oil is of good quality, it should go out after 10-20 seconds. If it does not go out, the reason is in a defective or inoperative oil filter. It needs to be replaced with a new high-quality one.

Faulty oil pressure sensor

The oil pressure at idle speed (at approximately 800 - 900 rpm) should not be less than 0.5 kgf / cm2. Sensors for measuring emergency oil pressure are available with a different response range: from 0.4 to 0.8 kgf / cm2. If a sensor is installed on the car with an actuation value of 0.7 kgf / cm2, then even at 0.6 kgf / cm2 it will turn on a control lamp, signaling a kind of emergency oil pressure in the engine.
To understand whether the oil pressure sensor is to blame for the light bulb lighting up or not, you need to increase the crankshaft speed to 1000 rpm at idle. If the light goes out, then the oil pressure in the engine is normal. If not, then you need to contact a specialist who will measure the oil pressure with a pressure gauge, connecting it instead of the sensor.
Cleaning helps from false alarms of the sensor. It is necessary to unscrew it and thoroughly clean all the oil channels, because the cause of false alarms of the sensor may be in blockages.

If the oil level is normal and the sensor is good

First of all, you need to check the oil dipstick and make sure the oil level has not increased after the last check? Does the dipstick smell like gasoline? Perhaps gasoline or antifreeze gets into the engine. It is easy to check for the presence of gasoline in the oil, you need to lower the dipstick into the water and see if gasoline stains remain. If so, then you need to contact a car service, it may be necessary to repair the engine.
If there is a malfunction in the engine, as the oil pressure light comes on, it is easy to notice. Engine malfunctions are accompanied by a loss of power, an increase in fuel consumption, black or blue smoke comes out of the exhaust pipe.

If the oil level is normal, then you should not be afraid of a long indication of low oil pressure, for example, during a cold start. In winter, at low temperatures, this is an absolutely normal effect.
After an overnight stay, oil drains from all highways and thickens. The pump takes a certain time to fill the lines and build up the required pressure. Oil is supplied to the main and connecting rod journals earlier than to the pressure sensor, therefore, wear of engine parts is excluded. If the oil pressure lamp does not go out for about 3 seconds, it is not dangerous.

What can you do yourself

Measurement of oil pressure in the engine
The problem of low oil pressure is greatly complicated by the relationship between lubricant flow and low level and the overall pressure in the system. In this case, a number of faults can be eliminated independently.

If leaks are found, the problem is fairly easy to localize and solve. For example, oil leakage from under the oil filter is eliminated by tightening or replacing it. The problem with the oil pressure sensor, through which the lubricant flows, is solved in a similar way. The sensor is tightened or simply replaced with a new one.
As for oil seal leaks, it will take time, tools and skills. At the same time, you can replace the front or rear crankshaft oil seal with your own hands in your garage with an inspection pit.

Oil leakage from under the valve cover or in the sump area can be eliminated by tightening the fasteners, replacing the rubber gaskets, using special engine sealants. Abnormal geometry of the mating surfaces or damage to the valve cover / sump will indicate the need to replace such parts.

If coolant enters the engine oil, then you can remove the cylinder head yourself and replace the head gasket, while observing all the recommendations regarding the removal and subsequent wrapping of the cylinder head. An additional check of the mating surfaces will indicate whether you need to grind the block head. If cracks are found in the cylinder block or head, repair is also possible.
As for the oil pump, in case of wear, it is better to immediately replace this element with a new one. It is also not recommended to clean the oil receiver, that is, the part changes completely.
In the event that the problem in the lubrication system is not so obvious, and you have to repair the car yourself, then at the very beginning you should measure the oil pressure in the engine.
To solve the problem, as well as taking into account the exact idea of \u200b\u200bhow the oil pressure in the engine is measured and how it is done, additional equipment must be prepared in advance. Note that there is a ready-made device on the free market for measuring the oil pressure in the engine.

As an option, the universal oil pressure meter "Measure". Such a device is quite affordable and has everything you need in the kit. You can also make a similar device with your own hands. This requires a suitable oil-resistant hose, pressure gauge and adapters.

For measurement, a ready-made or home-made device is connected instead of the oil pressure sensor, after which the pressure readings on the manometer are evaluated. Please note that ordinary hoses cannot be used for self-production. The fact is that the oil quickly corrodes the rubber, after which the detached parts can get into the oil system.

Outcome

In view of the above, it becomes clear that the pressure in the lubrication system can drop for many reasons:
oil quality or loss of its properties;
leaks of oil seals, gaskets, seals;
oil "presses" from the engine (pressure rises due to malfunctions of the crankcase ventilation system);
oil pump malfunctions, other breakdowns;
the power unit may be badly worn, etc.
Note that in some cases, drivers resort to using an additive to increase the oil pressure in the engine. For example, XADO revitalizant. According to the manufacturers, such an anti-smoke additive with revitalizant reduces oil consumption, allows the lubricant to maintain the required viscosity when heated to high temperatures, restores damaged crankshaft journals and liners, etc.

As practice shows, an effective solution to the problem of low pressure additives cannot be considered, but as a temporary measure for old worn out motors, this method may be suitable. I would also like to draw your attention to the fact that the blinking of the oil pressure light does not always indicate a problem with the internal combustion engine and its systems.
Rarely, but it happens that electrical problems arise. For this reason, damage to electrical components, contacts, pressure sensor or the wiring itself should not be ruled out.

Finally, we add that using only the recommended oil helps to avoid many problems with the oil system and engine. It is also necessary to select a lubricant taking into account the individual characteristics of operation. The correct selection of the viscosity index for the season (summer or winter oil) deserves no less attention.

Engine oil and filters must be changed correctly and done strictly according to the regulations, since an increase in the service interval leads to severe contamination of the lubrication system. In this case, decomposition products and other deposits actively settle on the surfaces of parts and channel walls, clog filters and the oil receiver grid. The oil pump in such conditions may not provide the required pressure, oil starvation occurs and the wear of the motor increases significantly.

Specifications

Technical parameters Audi Q5 2.0 TFSI quattro / Audi Ku5 in the back of 5 doors. SUV with 211 hp engine, 7АКПП, produced from 2008 to 2012

Owners of an audi a5 car, especially newly-made ones, often have a question - how to check the oil level of an audi a5 and what needs to be done for this. Experienced drivers easily deal with this issue. Our article is written for beginners.

Conversations about the improper operation of the electronic level arise due to the fact that the owner does not know how to watch it correctly. Some people calculate which way the car must go in order for them to see this very level. As a result, they come to the conclusion that they need buying a dipstick from an a3 and it will finally show them the oil level of an audi a5. After the purchase, the owners begin to be confused by two factors: the mismatch of the min / max marks (this immediately indicates the uselessness of the purchase) and the fact that the probe rubs against the motor Shumka. After spending a certain amount of time with this acquisition, motorists send the purchased probe to the garage as an exhibit, and the a5 plug is returned in its place.

One thing to learn - you shouldn't look at the level of the big screen. Information saved by the vehicle earlier is shown here.

And in what period of time it was, and under what conditions it is not known.
It was 10 minutes. up to this point or a week ago? Is the oil glass during the measurement? At what temperature did the measurement take place? Cars that have a working start / stop are a little easier - when the engine is turned off in forced parking (traffic jams, traffic lights), they measure the level information. But one cannot be sure that for a short time when the car is parked, the oil is completely in the crankcase. Therefore, there is a difference in the information displayed. The vehicle does not measure the level when the engine is running! When you decide to check the oil level on the road - this information is outdated!
It is important that the measurement conditions must be the same, then the results can be compared. This should be done after the engine is off (approx. 5 min.) And oil t ≈ 90⁰. It is necessary to watch the temperature of the oil, not the coolant. The vehicle must be on a level surface.

We describe the measurement procedure itself

1. Turn on the ignition. Press and hold two buttons: "setup" and "car".
2. Release the buttons and wait for the hidden menu to appear.
3. Go to "car", then to "carextdtviselist", then to "oil level gauge".
4. Next, go to "carmenuoperation", then to "oil level gauge" and set it to the fifth level.
5. Press and simultaneously hold the "return" and "car" buttons to close the hidden menu.
6. Reboot the system with a combination of buttons. Go to "oil level", we will be shown the oil level in the internal combustion engine.

The following instructions may appear in the instrument cluster or in the MMI:

to item 1.

The indication is not cleared because no actuation of the bonnet contact sensors is detected.

The hood needs to be opened for at least 30 seconds , only then will there be a reset in the engine control unit!

to item 2.

1. There is no damper bowl on the oil level sensor. In this case, the sensor gives incorrect readings, which immediately after passing the minimum distance equal to with a gasoline engine 50 km, and with a diesel engine - 100 km are also displayed in the instrument cluster and / or in the MMI.

The described problems do not arise in cars with a mileage of more than 5000 km.

to item 3.

Oil level indication:

Both messages are cleared only if a static oil level between the MIN marks is detected again. and MAX.

to item 2. Control in serial production starting from the date of the vehicle production KN 18/2010

to item 1.

Checking the bonnet contact sensor:

Open the bonnet and check on the instrument cluster display to see if it is recognized as open.

The function of the bonnet contact sensor can also be checked using the VAS tester in Guided Fault Finding \u003e\u003e Function / component selection \u003e\u003e Body (repair gr. 01; 27; 50 - 97) \u003e\u003e 01 - Systems with self-diagnosis capability \u003e\u003e 09 - Block onboard supply control -J519 \u003e\u003e Measured value block 31.

to item 2.

1. Checking the oil level sensor:

Replace the oil level sensor only if the damper cap is missing!

When the measured value is higher 75 mm the engine oil level needs to be lowered.

The possibility of technical changes is currently being tested. Do not carry out any other repair work. Whenever possible, information will be communicated to the general public through the technical product information (TPI).

to item 3.

Before checking the static engine oil level in the MMI or radio display, check the actual oil level according to ELSA "Inspection Service and Care", top up the oil level if necessary.

The engine oil level can be checked in the MMI or radio \u003e\u003e CAR function button \u003e\u003e Oil level.

Check engine oil level conditions using MMI or radio:

Finally, the current oil level is determined and the warning indication in the instrument cluster is reset.

Like any other Audi car, the Q5 model is technically a fairly reliable car. This vehicle has a good and reliable powertrain and gearbox configuration. But, as with any machine, you need to take care of it on time for long and trouble-free operation.

In the maintenance regulations for the Audi Q5, the manufacturer indicated the recommended one together with the oil filter, as well as with the cabin filter every 15,000 kilometers. But this figure may remain so for drivers who constantly drive in a quiet mode and do not expose the engine to unnecessary loads.

If you sometimes like to hold the accelerator pedal in the floor or you often transport large enough, and accordingly heavy loads, by car, then you should not torment the heart of your car with used lubricant. The oil should be changed every 10,000 - 12,000 kilometers so that its deficiency or does not affect the operation of the car in the future.

Oil volume for Audi Q5 engines

Since several different gasoline and diesel power units are installed on this car model, and you have a choice of 4 engines, we will consider how many liters of lubricant each of them requires for their normal operation.

So, first let's go through the gasoline power units. In the gasoline version, two engines were presented - a four-cylinder 2.0 TFSI, which, according to the Audi Ku5's operating instructions, needs 4.6 liters of lubricant, and a six-cylinder 3.2 FSI, which requires 6.2 liters.

Also available in two variants, again a four-cylinder 2.0 TDI which requires 5 liters of oil, and a six-cylinder 3.0 TDI which requires 6.9 liters of lubricant.

Choosing the right lubricant

Gradually, we came to an equally important issue, this is the choice of the product with which we will fill the filling volume of our power unit. Many Audi owners start wandering around different forums, but that doesn't make any sense. You just need to open the technical inspection regulations, it has everything you need.

After analyzing this interesting book, we can see that the manufacturer clearly indicated which fluid is well suited for changing engine oil, namely: the original VAG 5W-30 LongLife III oil or the analogue of AV-L 5W-30 LongLife III.

There is no need to invent something of your own and to be in search of the right lubricant for a long time, since the manufacturer indicates the product that will fully preserve the resource of all the engine components and help it serve for a long time.

How to change oil in an Audi Q5 with your own hands

First of all, disconnect the battery so that later there are no errors on the speedometer screen. Once you are at the bottom of the machine, the first step is to find the drain plug on the pallet. Do not rush to unscrew the bolt on the drain hole, carefully inspect the space around the drain bolt for oil drips. If there are no drips, then you can safely open the drain plug, but if you see traces of drips, you can unscrew it, but you will have to immediately change the gasket on the drain bolt. It is advisable to drain it on a warm engine, since the heated oil is not the same as the cold one and will run away much faster.

We are waiting for the complete emptying of the engine from working off and we are changing the filter.

Once you are confident that the engine is empty, you can refill with fresh lubricant, and at the end of this procedure, allow your car to idle for a while.

As a result, we see that this procedure does not cause any particular difficulties, and in principle you can do everything yourself, if you wish.