Toyota RAV4 is a compact crossover of the Japanese concern, which appeared on the market in 1994. The car received a large number of positive ratings from both the expert community and ordinary motorists. Over time, production has changed 5 generations of the model. At different times, assembly lines were located in Japan, China, the USA, Canada and Russia. Several body types were offered - 3- and 5-door, open 3-door and 5-door with an extended wheelbase. The current version has been produced since 2021. The car is based on the TNGA platform: GA-K. It has a modern corporate design and a high level of equipment. RAV4 is officially presented in Russia, and is also found here on the secondary market.
Diagnostics and elimination of operational interruptions (malfunctions) on Toyota RAV 4
It's easy to get lost among the variety of scanning devices.
Scan Tool Pro is one of them. This instrument is easy to operate and suitable for initial analysis. The scanner is universal. Connects to any type of device running on operating systems such as iOS, Android, Windows, via the standard OBDII protocol.
Pros of Scan Tool Pro:
- compactness,
- versatility,
- ability to save and print out error codes,
- Compatible with Rav 4.
The device detects most faults. And yet, the scanner has one serious drawback - there are too many fake devices on the market. It will be difficult for an amateur to distinguish the original from the fake.
Automotive scanner Scan Tool Pro
Launch CReader V+ is already equipped with a bright LCD screen and does not require additional connection to devices. The test results are displayed on the screen in the form of text and graphic blocks reflecting the dependence of the values.
Advantages of Launch CReader V+:
- absolute autonomy;
- displaying indicators online;
- long service life;
- ease of operation.
The device has one drawback - the screen is too small.
Delphi DS150E is the leader among affordable automotive scanners. The device is universal and works using the Generic OBD or eOBD protocols, and also scans available car units. When performing dynamic scanning, data is transferred to a memory card, which is installed in a special slot.
The Delphi DS150E has many features for an affordable automotive scanner, often used in service stations. Some users consider the too large size of the device to be a disadvantage.
Rav4 Error Codes
Once you understand what is not working correctly, it is easier to fix the problem.
p1047 and p2646
p1047 error Toyota Rav4 means defects in the operation of the B1 power circuit and the settings of the Valvematic ECU. To determine a break, check the voltage level at the contacts. The problem can be solved by replacing the continuously variable valve lift controller, as an assembly, or by replacing the wiring harness.
ECU Valvematic Rav 4
Code p2646 records the receipt of a command to open the valve without a signal from the VTEC sensor that there is pressure.
Reasons for error code p2646:
- mechanical (mesh clogged, valve damage),
- electrical (pressure sensor failure).
- Experts recommend inspecting the sensor and checking its operation when the pressure changes.
p1604
Errors p1604, p1605 on Rav 4 are easy to identify with a scanner. Cause of "Startup Failure" And possible reasons: problems with ignition, low-quality fuel, problems with anti-theft agents, internal combustion engines, injectors, oxygen sensors or a filter associated with starting the system.
p2118
The valve ECU is powered via a dedicated circuit. If the system voltage is less than 4V, the damper is malfunctioning. The current to the throttle drive is cut off.
Finding the problem is quite simple. But to identify the faulty area, you need to inspect the battery, fuse, ETCS power circuit, ECM.
After the ECU detects error code p2118, the ECM operates in emergency mode. It will continue until a normal condition is detected and the technician turns off the ignition system.
Check VSC System error and flashing 4LO
This error usually plagues cars with diesel engines (both Toyota Land Cruiser 200, Toyota Camry, and Lexus lx 570). In addition to the two indicators, the car owner can observe a decrease in the car’s power. The whole problem is solely in the fuel and the peculiarities of operating diesel cars in cold climates.
Treatment: replacing the fuel filter, changing gas stations.
Computer diagnostics
The best results are achieved when tested on professional dealer devices.
In most cases, a simple scanner is enough for an ordinary driver to read faults from engine management systems.
To consider malfunctions in the operation of the car, the technician must perform the following actions:
- Turn off the ignition in the car, connect the diagnostic connector to the scanning device.
- Connect to a laptop, computer or smartphone via cable or Bluetooth connection.
- Launch the diagnostic program, select data on the car: model, make, year of manufacture.
- Start the car and wait for the diagnostic process to complete.
- A list of error codes accumulated in the ECU will be displayed on the device screen. It is necessary to record the list and its explanation.
- Remove errors.
- Start retest. Record the resulting list of errors, which will be different from the previous one.
- If the analysis is carried out by professionals, the next stage consists of a dynamic scan, which will reveal key engine operating standards. To do this, the master starts the engine and performs diagnostics.
- Next, the analysis of the remaining leading systems of the Rav 4 is carried out: brakes, automatic transmission, anti-theft, climate systems, etc.
- When the test is completed, the engine stops and the scanner is disconnected.
Diagnostic connector Rav 4
And only after that the wizard analyzes and eliminates errors identified during the diagnostic process.
Error: "Check AWD system, TRC system is not working" on Toyota Rav4.
Greetings, friends!
Today I will tell you about a recent incident with my car.
As usual, after warming up, the car began to move from the parking lot after 10 minutes, stopping at an intersection, I heard a sound signal from the dashboard and saw that the error “ TRC system is not working ”
“ icon lit up on the panel .
I found in the manual that to turn on the
TRC
you need to press the button on the panel on the left side.
But when I pressed this button, a new message “Check AWD system” appeared .
The first thing that came to mind was to remove the terminal to clear the error. This action did not help.
Here I got a little worried, because after reading on various forums the assumptions were not reassuring.
Some wrote that it was necessary to look at the spark plugs
, the engine , the fuel pump ,
others that it was something with
a variator
, and many more assumptions. They suggested going to an official dealer, but we are not looking for easy ways.
I read in one of the posts that such glitches can occur along the power supply line. You could check this on your own, which is what I did.
As a result, the reason was found, it was simply a 7.5 A
Under the number 14
responsible for the reversing lights.
After installing the working fuse, you must reset the terminal again to clear the errors.
After this, the errors no longer appeared. I will be glad if this information helps you.
Self-diagnosis
When using Rav 4, there are situations in which it is necessary to diagnose fault codes. Toyotas have 3 diagnostic connector blocks:
Diagnostic connector DLC 1
Depending on the year of manufacture, diagnostic units are located either in the cabin or under the hood. If there is no car scanner, then perform self-diagnosis on Rav 4. You will need a paper clip or wire of the same length, bent into a U shape.
What to do if Rav 4 error appears
Rav 4
Failures and incorrect operation of vehicle systems are recorded in control units. Toyota cars are no exception. To determine the severity of the problem and identify Rav 4 errors, it is worth conducting self-diagnosis of the systems . This procedure can be carried out by the car enthusiast independently .
Car scanners will make diagnostics easier and more accurate, allowing you to identify error codes that prevent the car from working properly.
Check Engine light is on (engine error): causes and best solutions to the problem
On the road, situations often arise when the check light is on and the message “ engine power limited ” is displayed. With this signal, the on-board computer responds to a number of breakdowns, which include: At car services, injectors are cleaned on special ultrasonic cleaning stands or completely replaced. You can continue driving with one or two clogged injectors at low speeds.
It will be easier for the driver to determine the essence of the problem if there is a special auto scanner for diagnostics. It can be used to configure and diagnose the on-board computer. Without a scanner, you need to decipher error codes yourself using a table.
Computer diagnostics
Scanners are necessary to diagnose the ECU and all components of the car.
The best results are achieved when tested on professional dealer devices .
In most cases, a simple scanner to read faults from engine management systems.
General Rav 4 error codes are determined using the OBDII protocol.
To consider malfunctions in the operation of the car, the technician must perform the following actions :
- Turn off the ignition in the car, connect the diagnostic connector to the scanning device.
- Connect to a laptop, computer or smartphone via cable or Bluetooth connection.
- Launch the diagnostic program, select data on the car: model, make, year of manufacture.
- Start the car and wait for the diagnostic process to complete.
- A list of error codes accumulated in the ECU will be displayed on the device screen. It is necessary to record the list and its explanation.
- Remove errors.
- Start retest. Record the resulting list of errors, which will be different from the previous one.
- If the analysis is carried out by professionals, the next stage consists of a dynamic scan, which will reveal key engine operating standards. To do this, the master starts the engine and performs diagnostics.
- Next, the analysis of the remaining leading systems of the Rav 4 is carried out: brakes, automatic transmission, anti-theft, climate systems, etc.
- When the test is completed, the engine stops and the scanner is disconnected.
And only after this the wizard analyzes and eliminates errors identified during the diagnostic process.
“TRC OFF” light on Toyota: How to solve the problem with traction control
Car owners often notice that the “TRC On” light is on. This is traction control. What this feature protects against and controls on modern cars, as well as what to do if “TRC Off” lights up, the reader will find in this article.
The traction control system first appeared in 1971 in America on such famous cars as Cadillac and Buick. It began to be used on luxury cars of the German brand Mercedes since 1987. After the 2000s, manufacturers began to include TRC in every car.
What is TRC
Many car owners notice that the “TRC On” light comes on on various Toyota modifications. But not everyone knows what it is.
TRC translated from English means “Traction Control”. Speed sensors monitor wheel speed and the system uses measures to reduce traction. The first modifications of cars reduced traction by reducing engine speed. Modern vehicles reduce speed using a special viscous coupling.
If the “TRC On” lamp is on, this means that the wheel slip and skid control system is turned on. In Toyota, this system monitors and mitigates skidding and slipping. Although it was originally created only as anti-skid.
The TRC system works as follows:
- Sensors monitor wheel speed. The signals are sent to the ECU (electronic control unit) .
- If the device detects an increase in speed, it transmits a signal to the actuators.
- Special automatic TRC valves block the movement of wheels that begin to slip.
Thus, traction control protects the driver and the car from creating emergency situations on the roads.
Attention! On cars of the Toyota Avensis, Auris and many other brands, there is a button on the dashboard called “ TRC Off ”. It allows you to disable traction control.
How to use the traction control system
Traction control works when sliding slightly and even where you need to drive a difficult section of sandy road off-road. To drive on country roads, manufacturers have placed a button on the dashboard that turns off the traction control.
By clicking on it, the car owner will be able to drive the car along difficult sections of the road where intensive acceleration of the car is needed, and not blocking the wheels. But drivers should be aware that after pressing the button for a while, it automatically turns off and the traction control system comes into action again. Therefore, it will have to be pressed several times if the car crosses long, difficult sections.
But it happens that the VSC and TRC lamp turn on together on the dashboard monitor. This indicates an error in the driver safety monitoring system.
Car scanners
It's easy to get lost among the variety of scanning devices.
To diagnose Rav 4 error codes, both hardware types of devices and scanners from the adapter are used.
Scan Tool Pro is one of them. This instrument is easy to operate and suitable for initial analysis. The scanner is universal . Connects to any type of device running on operating systems such as iOS, Android, Windows, via the standard OBDII protocol .
Pros of Scan Tool Pro:
- compactness,
- versatility,
- ability to save and print out error codes,
- Compatible with Rav 4.
The device detects most faults. And yet, the scanner has one serious drawback - there are too many fake devices on the market. It will be difficult for an amateur to distinguish the original from the fake.
Launch CReader V+ is already equipped with a bright LCD screen and does not require additional connection to devices. The test results are displayed on the screen in the form of text and graphic blocks reflecting the dependence of the values.
Advantages of Launch CReader V+:
- absolute autonomy;
- displaying indicators online;
- long service life;
- ease of operation.
The device has one drawback - the screen is too small .
Delphi DS150E is the leader among affordable automotive scanners. The device is universal and works using the Generic OBD or eOBD protocols , and also scans the available car units. When performing dynamic scanning, data is transferred to a memory card, which is installed in a special slot.
The Delphi DS150E has many features for an affordable automotive scanner, often used in service stations. Some users consider the too large size of the device to be a disadvantage.
Self-diagnosis
When using Rav 4, there are situations in which it is necessary to diagnose fault codes. Toyotas have 3 diagnostic connector blocks :
Depending on the year of manufacture, diagnostic units are located either in the cabin or under the hood . If there is no car scanner, then perform self-diagnosis on Rav 4. You will need a paper clip or wire of the same length, bent into a U shape.
- Turn off the ignition system and devices that consume energy.
- Open the hood, remove the cover from the DLC 1 block, which contains a labeled list of connectors.
- You need to find TE1, E1 in the list.
- Insert the wire into the sockets with these names and close them.
- Start Rav 4.
- Keep an eye on the “CHECK” light.
- You can determine the error number by counting the number of blinks, paying attention to the intervals between them . The number of blinks at half-second intervals is a number. A pause of two and a half seconds - the interval between tens and units is one and a half seconds, between codes 2.5 seconds. That is, three blinks with an interval of 0.5 seconds, a pause of 1.5 seconds and three more blinks with a difference of 0.5 seconds - code 33.
How can I reset the error?
After diagnostics, you need to erase the fault code. This can be done by following the following step-by-step algorithm:
- Turn on the ignition system.
- Close the contacts called TC and E1. After this, the control unit memory will be reset to zero.
- The driver needs to quickly press the brake pedal for 3 seconds (at least 8 times).
- Next you need to check the indicator. It should flash every 0.5 seconds
- Turn off the ignition system, then disconnect the jumpers from the pins. To ensure that the trouble code is cleared correctly, you need to check that the anti-lock braking system indicator on the dashboard is not illuminated. If it doesn't light up, then everything is correct.
You can also reset error codes using technical means. For example, a laptop can help with this. This will require a special program designed for these purposes.
This article describes the most common error codes. If there is an error that is not in the material, we recommend contacting the service.
Rav4 Error Codes
Rav 4 error diagnostics are deciphered using a table of engine damage codes or automatically using a scanner.
Once you understand what is not working correctly, it is easier to fix the problem.
p1047 and p2646
p1047 error Toyota Rav4 means defects in the operation of the B1 power circuit and the settings of the Valvematic ECU . To determine a break, check the voltage level at the contacts. The problem can be solved by replacing the continuously variable valve lift controller , as an assembly, or by replacing the wiring harness.
Specialists have learned how to repair and configure Valvematic control units, but not every electrician will undertake such work.
Code p2646 records the receipt of a command to open the valve without a signal from the VTEC sensor that there is pressure .
Reasons for error code p2646:
- mechanical (mesh clogged, valve damage),
- electrical (pressure sensor failure).
- Experts recommend inspecting the sensor and checking its operation when the pressure changes.
p1604
Errors p1604, p1605 on Rav 4 are easy to identify with a scanner. The reason for the occurrence of “Startup failure” . And possible reasons: problems with ignition, low-quality fuel, problems with anti-theft agents, internal combustion engines, injectors, oxygen sensors or a filter associated with starting the system.
p2118
p2118 error in Toyota Rav 4 vehicles indicates a problem with the power supply to the throttle valve.
The valve ECU is powered via a dedicated circuit. If the system voltage is less than 4V , the damper is malfunctioning. The current to the throttle drive is cut off.
Finding the problem is quite simple. But in order to identify the faulty area, you need to inspect the battery, fuse, ETCS power circuit, ECM .
After the ECU detects error code p2118, the ECM operates in emergency mode. It will continue until a normal condition is detected and the technician turns off the ignition system.
Common problems and malfunctions: weak points of the machine
According to Russian car enthusiasts, the RAV4 is one of the most reliable crossovers. However, this model also has weaknesses and characteristic “sores”.
Motor
The 2L 3ZR-FE series engine is considered reliable. Some problems arose with pre-restyling models. After 50 thousand kilometers, the control unit of the Valvematic system, which changed the lift height of the intake valves, failed. This unit cost about 40 thousand rubles. and was beyond repair. After restyling, they decided not to install the actuator.
The 2.5-liter 2AR-FE petrol engine does not cause any complaints. Compared to 3ZR, it is more reliable and has a longer service life.
A common problem with all RAV4 gasoline units is leakage of the cooling system pump after 100 thousand km. The cost of replacement is about 18 thousand rubles.
The 2.2-liter diesel engine has several disadvantages:
- In pre-restyling models, the gasket on the cylinder head quickly loses its tightness. The consumption of coolant and oil increases, and carbon deposits form on the pistons. After restyling, this drawback was eliminated.
- Overfilling fuel injectors leads to engine wear and pistons burnout.
- Leaking front engine cover after 30-40 thousand kilometers. The problem is typical for models released before February 2015.
Variable speed drive
The reliability of the manual transmission and the “classic” 6-speed automatic transmission does not raise any complaints among RAV4 owners. The weak point is often the variator. It reacts poorly to sudden braking and slipping, rapid acceleration and low temperatures.
With an aggressive driving style and poor quality of maintenance, breakdowns begin after 100 thousand km.
The most common problems with the variator:
- failure of bearings on the input shaft;
- tension and failure of the timing belt;
- aging and deformation of gaskets and seals - as a result, they leak lubricant.
Among the operational shortcomings, owners note that the operation is too noisy.
We described the problems of the variator in detail in this article.
Front-wheel drive
Toyota RAV 4 with front-wheel drive copes well with the tasks in the city and on the highway. But this configuration is not enough for off-road driving. In addition, difficulties arise when climbing uphill on a winter road - the car begins to slip.
In front-wheel drive models, pulleys often wear out or become deformed, which leads to breakdown of the entire mechanism.
Fuel system
Such malfunctions occur due to low quality gasoline. Even a single refueling with bad fuel can lead to breakdowns.
Common fuel system problems include failure of:
- nozzles;
- throttle body;
- fuel pump.
Steering rack
The disadvantage of the RAV4 is the rapid failure of the steering rack. The first problems often occur after 50 thousand mileage. With careful operation, the resource reaches 100 thousand km.
Frequent steering mechanism malfunctions:
- Power steering fluid leaking. The problem is caused by ruptures or cracks in the O-rings. The fluid level in the reservoir drops, and a puddle may form under the car.
- Bushing failure. Knocks and strong vibrations in the steering wheel appear when driving on uneven roads.
- Increased play and decreased steering sensitivity when driving on a smooth surface.
After completing the turning maneuver, the steering wheel does not return to its original position. If malfunctions are not corrected in a timely manner, this threatens the failure of the entire mechanism. A complete replacement will require large financial investments.
Suspension
A distinctive feature of the Toyota RAV4 is its rigid suspension. On an uneven dirt road, the driver and passengers feel every bump and pothole.
Common front axle problems are:
- Low life of stabilizer bushings. They have to be changed after 40-50 thousand km.
- Destruction of the hub studs - when tightened too tightly, the threads break off.
- Failure of the front lever blocks.
- Bearing destruction.
Common disadvantages of the rear suspension are:
- Soft silent blocks. They break easily when driving on uneven roads.
- Oxidation of camber levers, leading to problems when adjusting wheel geometry.
- Damage to the rear stabilizer strut mounting.
Replacement of suspension parts is required after 50-60 thousand kilometers.
Failure of cooling system components
With proper maintenance and regular cleaning, the crossover cooling system does not cause any complaints.
Otherwise, the following problems occur:
- The radiator becomes clogged with dirt and dust particles.
- Antifreeze is leaking from the system.
- The coolant is squeezed out through the plug.
All this leads to engine overheating and failure.
Lubricant consumption
Owners of cars with more than 100 thousand mileage complain about increased oil consumption. It can reach 1 liter per 1 thousand kilometers.
In addition to waste, external leaks may be the cause:
- from under the filter;
- from under the timing chain cover;
- through the seals when they wear out.
To avoid engine breakdowns, it is necessary to add oil on time and eliminate the causes of leaks.
Defects in chrome body trim elements
Many versions of the Toyota RAV4 are available with chrome door handles and decorative trims on the body. Due to contact with aggressive reagents in winter, these parts quickly corrode. Rust spots appear on the body, and the exterior loses its attractiveness.
Special chemicals are produced to remove rust. You can buy them in auto chemical stores. For preventive purposes, during the cold season, chrome parts are treated with special aerosols.
Timing chain stretches
Official service centers recommend changing the timing chain every 200-300 thousand kilometers. According to reviews from Toyota RAV4 owners, the need for repairs arises after 100 thousand km.
The easiest way to check the condition of the chain is with a caliper. Measure 16 links of a large circle (normal length - 122 mm) and 8 elements of a small circle (normal length - 54 mm). If the length exceeds these indicators, the chain must be replaced.
Paint quality
The disadvantage of the Toyota RAV 4 is its poor quality paintwork. Chips and scratches quickly appear on a thin layer of paint. Because of this, the metal of the body is subject to corrosion.
