Servomotor of the transfer box: amzn.to/2lcC00Z
In this video I show you the procedure to replace the servomotor of the transfer case (transfer case) of the Porsche Cayenne and the Volkswagen Touareg. Quite often these cars, when they are several years old, usually present a warning on the instrument panel of failure in the system 4 x 4 (4-wheel all-wheel drive) "Four Wheel Dr. System Faulty". In this video I try to reveal the keys to solve it by ourselves without having to resort to the expensive official service.
In this video I tried to find out if I found any problem in the wiring or inside the servomotor but without success.
What I have been able to investigate in this regard is the following:
When this problem occurs, in the vast majority of cases, the error reported by the scanner is error number 2039 "Servo motor potentiometer of the transfer case".
When this error occurs, the Porsche official house indicates that it may be due mainly to 3 causes: For what I have found out the percentage incidence of each of them is the following:
1st Cause and the most probable one (80% of the cases approximately): One of the two potentiometers of the servomotor fails. The servomotor is not broken up so you have to replace the entire servomotor, which is precisely what is shown in this video. The servomotor in the official house costs 800-1,000 €. The Porsche references of this servomotor of the transfer case are the following: 95562460100, 95562460101. This servomotor can be obtained from Amazon, eBay, AlliExpress, etc. From parallel manufacturers for an approximate price of € 150 with shipping included: amzn.to/2lcC00Z
2º Another cause is due to a problem in the wiring between the servomotor control unit and the servomotor (10% of cases). All wiring must be checked thoroughly until the source of the problem is found. The official house has established a diagnosis protocol in this regard, measuring voltages and resistances between different pins of the wiring system between these two elements. I will try to make a video about it in the future.
3º Finally and once discarded that it is not of any of the previous causes, the problem would be in the control unit of the servomotor, that is just below the button by means of which the establishment of the reductor is manipulated. This control unit can be found second hand for about € 90 and new costs more than € 500.
What I have deduced is that the servomotor is very close to the exhaust pipe (too close) and that over time, this heat from the exhaust pipe progressively damages the electrical components of the servomotor. The servomotor's electric motor does not break down, but the first thing that is damaged is one of the two internal potentiometers carried by the servo motor electronics. A potentiometer is a very cheap piece to replace, but in this case there is no cutting, so in the case of spoiling, or one dares to break the servomotor by itself and replace the potentiometer spoiled, or if necessary, the Servo motor temperature sensor, or if not, you have to buy the complete servomotor. Either the original, which as I say is very expensive, or the one produced in China that costs about € 150. I, of course, have commissioned the event in China and when I change it I will make a video telling the experience.
This video belongs to a set of videos made about maintenance and repair operations of the PORSCHE CAYENNE 3.2 V6 DE 250 cv.
Playlist of all the videos of the channel about PORSCHE CAYENNE:
• PORSCHE CAYENNE, CAMBI...
The links to those videos are the following:
1. Change engine oil and oil filter.
• PORSCHE CAYENNE, CAMBI...
2. Replacing brake pads and front brake discs.
• PORSCHE CAYENNE, SUSTI...
3. Replace the cable wear warning brake pads
• PORSCHE CAYENNE, Susti...
4. Replacing rear brake pads.
• PORSCHE CAYENNE. SUSTI...
5. Change brake fluid.
• PORSCHE CAYENNE. SUSTI...
6. Replacing the air filter.
• PORSCHE CAYENNE. SUSTI...
7. Replacing cabin air filter.
• PORSCHE CAYENNE. SUSTI...
8. To place the car in position "CAT"
• PORSCHE CAYENNE. Posi...
9. Replace spark plugs and measure engine compression.
• PORSCHE CAYENNE, Susti...
10. How to change the glass of the rearview mirror of the car.
• Cómo cambiar el crista...
11. How to replace the rear bulbs lights.
• PORSCHE CAYENNE. Cómo ...
12. Water and humidity inside the car? SOLUTION!! Unclog air conditioning drain.
• ¿Agua y humedad en el ...
13. Service reset.
• Cómo resetear los inte...
14. How to turn off warning light of worn brake pads.
• Como apagar luz aviso ...
15. Tire pressure.
• PRESIÓN INFLADO NEUMÁT...
16. How to replace battery.
• Cómo cambiar la baterí...
17. Parking pedal does not return and light ON in dash.
• Pedal freno mano o est...
18. How to solve the 4x4 and transfer error of the Porsche Cayenne and the VW Touareg.
• Cómo solucionar el err...
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