While operating a Lada Vesta and some Renault models, owners may encounter problems with the air conditioner (after a while it turns off and starts blowing warm air). The malfunction may be associated with the evaporator temperature sensor (DTI) or the cabin air temperature sensor (DIAS). A simple sensor repair will allow you to save more than 6 thousand rubles.
The evaporator temperature sensor (part number and price) is located next to the driver’s right foot and is installed on the evaporator housing. It outputs a signal to the SAUKU controller, the value of which depends on the temperature of the evaporator.
The interior air temperature sensor (part number and price) is located next to the interior mirror and is installed in the rain sensor trim housing. It outputs a signal to the controller, the value of which depends on the ambient temperature.
Is there a climate on the Lada Vesta
Before installing the climate control on a Vesta with air conditioning, you need to pay attention to the equipment of the car. Today, this car model is produced in several modifications - Classic, Classic Start Plus, Comfort Light, Comfort, Lux Enjoy Pro, Lux Enjoy and Exclusive.
At the same time, climate control is not provided in all of the versions listed above. He stayed in Lux Enjoy Pro and Exclusive. Previously, the system was also installed in the Comfort version, but at the beginning of 2020, the manufacturers decided to remove this option. Against this background, owners of simpler versions have a question about installing climate control on Vesta with air conditioning. Moreover, entire kits or individual components are available for sale to solve this problem.
Purpose
The coolant temperature sensor (CTS) is used to monitor the antifreeze temperature; the sensor also participates in the formation of the fuel mixture and automatically turns on the engine cooling fan when critical temperature values are reached.
The sensor operates on the principle of a thermistor, that is, with a change in liquid temperature, it changes its resistance and transmits these readings to the engine control unit, which, after receiving the readings, regulates the fuel mixture, and also, if necessary, turns on the engine cooling fan.
Many may notice the sensor working when starting the engine in the cold season; when the engine starts, you can see increased idle speed on the tachometer, which begins to fall as the engine warms up. This is the obvious work of the temperature sensor, which begins to change its resistance as the cooling liquid warms up.
Is it possible to put
Let us immediately note that converting the air conditioner into climate control on the Lada Vesta is quite possible. To do this, just select the necessary components and allocate time for replacement. Installation can be done in a garage or at a service station. At the same time, you need to be prepared for some difficulties associated with the selection of components, installation and operation of some equipment. We will dwell on this issue further below.
Installing climate control on Vesta is only possible if the car previously had an air conditioner. In cheaper trim levels, where the manufacturer did not provide a classic “cooler,” it will not be possible to install a climate system.
The relevance of the installation is due to the following factors:
- There is a big difference in price between the Lada Vesta with and without climate control.
- Obtaining additional capabilities in terms of automatic temperature control.
- There are no big difficulties with installing the climate control on Vesta Comfort Winter and other modifications.
- Relatively low costs for purchasing the necessary equipment for installation.
To install climate control on Vesta, you must have a minimum level of knowledge and experience in car wiring. You will also need a connection diagram, without which you will not be able to properly connect the equipment and check its operation.
Replacement
To replace the sensor, it is necessary to drain the antifreeze, but there are ways that allow you to replace the sensor without draining the coolant. Let's consider the option of replacing the DTOZH without draining the coolant, since it is the least labor-intensive and the fastest.
Would need:
- Antifreeze 1 liter;
- Set of tools;
Replacement process
Attention! Work must be carried out on a cool engine to avoid burns.
- Relieve the pressure in the engine cooling system by unscrewing the expansion tank cap;
- Remove the air filter box;
- Remove the connector from the sensor;
- We unscrew the sensor and plug the hole with a finger so that the coolant does not leak out;
- We install the new sensor quickly so that coolant leakage occurs as little as possible;
- Add coolant to the level and assemble everything in the reverse order, not forgetting to tighten the expansion tank cap.
What you need
To install climate control on a Lada Vesta, you need to purchase installation equipment. It includes:
- Interior temperature sensor (from Renault). Controls the situation inside the car. The part number is 277200005R. Its purchase will cost about 1000-1500 rubles. If you look at a disassembly site, the costs may be lower.
- Evaporator/air temperature sensor. Here you can use part number 277230128R. As in the case discussed above, this is a part from Renault. When purchasing a new spare part, you need to be prepared to shell out about 5,500 rubles. When disassembled, such parts are cheaper - up to 2000 rubles.
- Control Panel. To replace the air conditioner with climate control on the Lada Vesta, you need the main trim itself. Buying a panel with buttons and a screen costs 4500-6000 rubles. If you search on forums, you can find it significantly cheaper - up to 2000 rubles.
- Controller For correct operation of the device, firmware is required. If you take a product from disassembly, there is no need for adaptation. You can recognize the part by article number 8450008027. The price of a new device is about 12,500 rubles, but when buying secondhand you can save up to 10,000 rubles.
Before installing climate control on Vesta with your own hands, you will need to purchase two connectors:
- Two 40 PIN connectors. Type - AMP 1379671. Finding them on sale is quite difficult, but it’s worth trying. When purchased secondhand, the product will cost about 1,000 rubles.
- One 12-pin connector. To search, you can use article number 1898005460AS. The price of new equipment is about 2000 rubles.
Instead of interior/air temperature sensors and connectors, experts recommend purchasing a prepared DS-KK type harness.
Its cost is about 3300 rubles. At the same time, you can save money on installation and avoid violations. If installed correctly, the climate control will work correctly on Vesta. The harness contains the necessary mating elements for standard connectors, the control unit and the main panel of the system.
Consider a few points:
- When purchasing a used controller for installation on Vesta, look at the production date. If the device was manufactured and released in 2015, it will not work correctly. Take parts that were produced starting from 2016. They function correctly and there are no compatibility issues.
- After installing climate control on a Lada Vesta, instead of an air conditioner, you need to “register” the device in the TsBKE or modify the system control unit. If this is not done, the rear window heating will not work due to different types of signals. In particular, on a regular air conditioner the control is analog, but on Vesta’s climate control it is digital using a CAN bus.
Checking the sensors
To check the sensors, you should measure their resistance. It should change depending on the temperature:
| DTI | DTVS | |||
| T(°C) | Rnom (Ohm) | Rmin (Ohm) | Rmax (Ohm) | R (Ohm) ± 3% |
| -40 | 92757 | 89459 | 96054 | — |
| -35 | 66870 | 64733 | 69007 | — |
| -30 | 48790 | 47399 | 50181 | 176100 |
| -25 | 35937 | 35031 | 36842 | 129900 |
| -20 | 26757 | 26168 | 27347 | 96810 |
| -15 | 20103 | 19721 | 20485 | 72810 |
| -10 | 15252 | 15007 | 15497 | 55250 |
| -5 | 11664 | 11510 | 11818 | 42290 |
| 0 | 9000 | 8910 | 9090 | 32640 |
| 5 | 6998 | 6906 | 7090 | 25390 |
| 10 | 5485 | 5400 | 5571 | 19900 |
| 15 | 4330 | 4251 | 4408 | 15710 |
| 20 | 3443 | 3372 | 3513 | 12490 |
| 25 | 2757 | 2694 | 2819 | 10000 |
| 30 | 2221 | 2166 | 2276 | 8056 |
| 35 | 1800 | 1752 | 1849 | 6530 |
| 40 | 1468 | 1426 | 1511 | 5325 |
| 45 | 1204 | 1167 | 1242 | 4367 |
| 50 | 993,2 | 960,3 | 1026 | 3601 |
| 55 | 823,2 | 794,4 | 851,9 | 2985 |
| 60 | 685,8 | 660,6 | 711,1 | 2487 |
| 65 | 574,2 | 552,0 | 596,3 | 2082 |
| 70 | 482,9 | 463,5 | 502,4 | 1751 |
| 75 | 408,3 | 391,2 | 425,5 | 1480 |
| 80 | 346,8 | 331,7 | 361,9 | 1256 |
| 85 | 295,6 | 282,2 | 308,9 | 1070 |
How to install
After preparing the equipment, you can figure out how to install climate control on the Lada Vesta. A detailed connection diagram should be in front of your eyes. In this case, the general algorithm of actions is as follows:
- Place the interior temperature sensor in the mirror area and hide it under the trim.
- Install the evaporator temperature sensor instead of the plug on the panel. In this case, the hole can be made using a drill with a drill bit and further processing using a needle file.
- Mount the controller for climate control on the same mount as the ERA Glonass.
- Install a new system according to the diagram in place of the air conditioner unit.
As you can see, it is possible to install climate control on Vesta, and the price depends on the ability to find cheap components and the willingness to do the work yourself. In the best case, the total costs will not exceed 5,000 rubles, but when purchasing new spare parts, this amount can increase several times. If you resort to the help of service station specialists, the installation will cost even more.
In the comments, tell us if you are ready to install climate control on Vesta or share your experience in performing such work, if you have such experience.
Reviews
| № | Positive |
| 1. | Dmitrievich (drive2.ru): in severe frosts, the temperature is displayed incorrectly, sometimes exceeding, sometimes lowering the degree. |
| 2. | Semyon (prom.ua): the location of the measuring device is not the best, the temperature data is unreliable. |
| 3. | Sergey (drom.ru): the device is operating normally, there are no comments. |
| 4. | Konstantin (rozetka.ua): on the recommendation of his comrades, I bought an electronic DTOS with a display for displaying data in the cabin. |
| 5. | Vladimir (Auto.ru): in severe frosts or with frequent trips in the rain, the readings are inaccurate, I noticed more than once. |
| 6. | Nikolay (auto.mail.ru): the device served for three years, after which it was replaced with a new one. The resource is not enough, it could have been longer, apparently it was defective. |
| 7. | Kirill (drive2.ru): I can’t say anything special about DTOS, they work as normal. |
| 8. | Sergey (drive2.ru): drove 60,000 km, never changed the DTOS. |
| Negative | |
| 9. | Vladimirovich (prom.ua): the external sensor froze after the rain, apparently the contacts were flooded with water. I'll go to the service station to replace it with a new one. |
| 10. | Alexander (Bibika.ru): exceeds the temperature readings by 2 - 3°. I'll turn to specialists for calibration. |
| 11. | Valentin (drive2.ru): prematurely failed after 50,000 km. I read that many Vestovites have a similar “disease”. |
| 12. | Semyon (Avtodispatcher.ru): I bought an imported outside temperature sensor with a display in the cabin, I’ve been driving it for the second year without any complaints. |
