check engine VOLKSWAGEN EOS 2021 Owner´s Manual

Display text Proper response
Error: convertible top Service!
See an authorized Volkswagen dealer or authorized Volkswagen Service Facility. The CSC roof will not go up or down if a system component malfunctions.
Error: Open convertible top! Open the CSC roof
Error: Close convertible top! Close the CSC roof
Low voltage: Please start engine! The vehicle battery is drained to the point that it cannot provide the power needed to completely open or close the CSC roof. Start the engine, by jump-starting if necessary. Open or close the CSC roof while the engine is running. Volkswagen recom-mends taking a longer drive afterwards to recharge the vehicle battery.
Temperature too high Sliding roof! or Temperature too high Convertible top!
Wait for a short time until the hydraulic and electrical unit cool down; they may have overheated. Opening and closing the CSC roof with great frequency may cause the hydraulic and electrical unit to overheat. Overload protection disables the roof until the unit cools down.
Convertible top open The message and an acoustic signal confirm that the CSC roof is completely open or closed. Convertible top closed
Convertible top not func-tional. Owners Manual!
Check the outside temperature shown in the instrument cluster display. At temperatures below +5 °F (-15 °C) you can close the CSC roof, but not open it.
Have the system checked by an authorized Volkswagen dealer or an authorized Volkswagen Service Facility. There is a mal-function in an ECU. It is not possible to open or close the roof. Use emergency procedure to close an open CSC roof if neces-sary
The instrument cluster displays and their arrangement may vary depending on the vehicle model and engine. For displays without warning and information messages, malfunctions are only signaled with indicator lights.

¥ The battery must have enough charge; the engine should be running.
If any changes have been made in the operation of the CSC roof compared with its original factory condition, Volkswagen strongly urges you to take the vehicle to an authorized Volkswagen dealer or other authorized Volkswagen Service Facility to have the roof restored to its original condition. Me-
chanical changes and changes to the vehicle software must be entered in the ⇒ booklet Warranty
and Maintenance.
WARNING
Disregarding the safety-related checklist may lead to accidents and serious personal injuries.
x Always review and follow the checklist. Follow accepted safety practices and use common sense.
On vehicles with Climatronic, you can set different heating and air conditioning temperatures for operation with the roof up and down, Heating and air conditioning.
Opening and closing the CSC roof

Fig. 32 In the center console: lever for the CSC roof.

x Pull the lever in the center console up and hold it until the CSC roof is completely closed ⇒ : A chime sounds every few seconds while the CSC roof is closing. A message may also appear in the instrument cluster display. When the roof is completely closed, the chime stops and the X indicator light or display message in the instrument cluster goes out. Keep the lever pulled to close all windows.
Interrupting CSC roof operation
Releasing the lever interrupts CSC roof operation ⇒ .
WARNING
Accidents and severe injuries can result if the CSC roof is opened or closed when someone is in the way.
x Never open or close the CSC roof unless the vehicle is parked at a safe distance from traffic.
x Do not open or close the CSC roof unless you have made sure that nobody is in the way of the luggage compartment lid, the roof system, or other moving parts.
x Check to make sure that the closed CSC roof is securely latched.
x If CSC roof operation is interrupted, please note the following:
– The CSC roof may not stop moving immediately. Gravity may cause the CSC roof to keep moving.
– Gradually (may take up to 8 minutes), the CSC roof will automatically lower itself into a balanced position.
– The CSC roof is, however not latched in this position. Stop!
WARNING
If interruption of opening or closing process causes the roof to come to rest in its forward position, the roof will not be latched.
x If you are unable to get the CSC roof to close “normally,” latch the roof using the emer-gency closing procedure, Emergency closing and opening.
x Watch for a message in the instrument cluster display indicating whether the roof has been properly closed.
NOTICE
Frequent opening and closing of the CSC roof drains the vehicle battery. To help prevent the battery from running down, you should keep the engine running if you need to open and close the roof frequently.
NOTICE
Always close the CSC roof before leaving the vehicle and when it may rain or snow. If the CSC roof is open, rain or snow can damage the vehicle interior and can cause extensive damage to the electrical system.

WARNING
The Automatic Rollover Support System can cause serious injuries if persons or objects are in the way when it deploys.
x Never use accessory seat covers or protective covers that block the rollover protection deployment area.
x Every rear seat passenger must be properly seated on a seat of his or her own and must stay in a proper seating position at all times.
x Always keep the area around the supports free of anything that could interfere with their deployment or fly about and injure occupants when the supports deploy.
x Never take the covers off the Automatic Rollover Support System.
x Never attach a child seat, child restraints, straps, or anything else to the rollover protec-tion supports.
WARNING
If there is a system malfunction, the Automatic Rollover Support System may cause serious injuries by not deploying properly, by not deploying at all, or by deploying unexpectedly.
x If a malfunction exists in the system, have it checked immediately by an authorized Volkswagen dealer or an authorized Volkswagen Service Facility. A malfunction exists in the system if the indicator light:
– does not come on when the ignition is turned on;
– does not go out about 5 seconds after you start the engine;
– goes out after switching on the ignition and then comes back on again;
– comes on or flickers when you are driving.
NOTICE
If deployed, the Automatic Rollover Support System can damage the CSC roof when opening or closing the top.
x Do not open or close the CSC roof if the Automatic Rollover Support System has deployed.

Possible reasons for changes in the way the rain sensor works
The rain sensor may misread what is happening in the detection zone of its sensitive rain-sensor
surface ⇒ fig. 90 (arrow) and not work for a number of reasons, which include:
x Worn out wiper blades: Worn out wiper blades may leave a film of water or wiping streaks; this can cause the wipers to run longer, to wipe more often, or to wipe continuously at high speed.
x Insects: Insects hitting the sensor may trigger the wipers.
x Salt streaks: Salt streaks on the windshield from winter driving can cause wiping more often or continuously on glass that is almost dry.
x Dirt: Caked-on dust, wax, any other buildup on the windshield (lotus effect), or car-wash detergent residue can lower the rain sensor's sensitivity and cause it to react too slowly or not at all.
x Crack or chip in the windshield: If a stone hits and chips the windshield while the rain sensor is on, this will trigger a wiper cycle. After that, the rain sensor will recognize the change and recalibrate itself to respond to the sensitive surface's reduced detection zone. Depending on the size of the chip, the sensor's reaction pattern may or may not change.
WARNING
The rain sensor cannot always recognize rain and activate the wipers.
x Switch the wipers on manually when water on the windshield reduces visibility.
Clean the rain sensor's sensitive surface (arrow) regularly and check the wiper blades for wear or damage.
To remove wax and coats of polish safely, we recommend using an alcohol-based windshield cleaner.
Checking and refilling windshield washer fluid

Fig. 91 In the engine compartment: Cap of the windshield washer fluid reservoir.

Emergency shift program
If all selector lever position indicators in the instrument cluster display are highlighted against a bright background, there is a system malfunction. The automatic transmission and the DSG automatic transmission will then operate in the emergency shift program. The emergency shift program lets you drive the vehicle, but at a reduced speed and without being able to use all of the forward gears.
In some cases, vehicles with a DSG® Direct Shift Gearbox automatic transmission may not be able to shift into reverse. It is then impossible to drive the vehicle backwards.
In any event, have the automatic transmission checked by an authorized Volkswagen dealer or authorized Volkswagen Service Facility.
Overheating of Direct Shift Gearbox (DSG®) automatic transmission
The DSG® automatic transmission may overheat, for example, due to frequent starts, extended “creeping,” or stop-and-go traffic. Overheating is indicated by the warning light Á and, if applicable, by a text message in the instrument cluster. An additional warning chime may sound. Stop and let the
transmission cool down ⇒ .
The vehicle does not move forward or in reverse even though a drive position is selected with the selector lever
If the vehicle does not move in the desired direction, the system may not have engaged the drive position correctly. Press the brake pedal and select the drive position again.
If the vehicle still does not move in the desired direction, there is a system malfunction. See your authorized Volkswagen dealer or authorized Volkswagen Service Facility for assistance to have the system checked.
NOTICE
x As soon as you get any of these warnings about transmission overheating, you must either park the vehicle in a safe place or drive faster than 12 mph (20 km/h).
x If the text message and acoustic warning repeat themselves every 10 seconds or so, you must park the vehicle in a safe place as soon as you can safely do so and stop the engine. Let the transmission cool down.
x To help prevent damage to the transmission, do not drive the vehicle again until the acoustic warning has stopped. As long as the engine is overheated, avoid stop and start driving and avoid low speeds (“walking pace”).

Lights up Possible cause Proper response
D
Power steering assist is reduced.
Stop, restart the engine, and drive a short distance. If the yellow warning light does not come on again, you do not need to have the steering system checked. Otherwise, have the steering checked immediately by an authorized Volkswagen dealer or an authorized Volkswagen Service Facility.
Vehicle battery was disconnected and has been reconnected. Drive a short distance at about 10–12 mph (15–20 km/h).

Flashes Possible cause Proper response
D Electronic steering column lock malfunction.

WARNING
Wet brakes or brakes coated with ice or road salt react slower and need longer stopping distances.
x Carefully apply the brakes to test them.
x Always dry brakes and clean off ice and salt coatings with a few cautious brake applications when visibility, weather, road and traffic conditions permit.
WARNING
Driving when the brake booster is not working increases stopping distances and can cause accidents and serious personal injuries.
x Never let the vehicle coast when the engine is switched off.
x If the brake booster is not working (such as when the vehicle is being towed), a lot more pedal force is needed to slow down and stop.
NOTICE
x Never “ride” the brakes by keeping your foot on the brake pedal when you do not want to brake. Constant pressure on the brake pedal can make the brakes overheat. Riding the brakes will substantially reduce braking performance, increase stopping distance, and can cause complete brake system failure.
x Before driving downhill, especially on hills that are long or steep, always reduce speed and shift into lower gear (manual or automatic transmission). This will let the vehicle use engine braking and reduce the load on the brakes. Otherwise, the brake system could overheat and possibly fail. Only use the brakes when you need them to slow the vehicle down more or to stop.
When the front brakes are serviced, you should have the rear brake pads inspected at the same time. The wear of all brake pads should be visually checked regularly. The best way to check for brake pad wear is to have your authorized Volkswagen dealer or authorized Volkswagen Service Facility visually inspect the pads through the openings in the wheel rims or from underneath the vehicle. If necessary, the wheels can be taken off for a more thorough inspection.
Braking assistance systems

Brake fluid specifications
Volkswagen has developed a special brake fluid that is optimized for the brake system in your Volkswagen. Volkswagen recommends that you use brake fluid that expressly conforms to quality standard VW Standard 501 14 for optimum performance of the brake system. Check the information on the container for the brake fluid you want to use to make sure it meets the requirements for your vehicle.
Brake fluid that complies with VW Standard 501 14 can be purchased from your authorized Volkswagen dealer or authorized Volkswagen Service Facility.
If this special brake fluid is not available you may – under these circumstances – use another high quality brake fluid that complies with U.S. Federal Motor Vehicle Safety Standard (FMVSS) 116 DOT 4
⇒ .
Please note, however, that not all brake fluids that comply with U.S. Federal Motor Vehicle Safety Standard FMVSS 116 DOT 4 have the same chemical composition. Some of these brake fluids can contain chemicals that could, over time, degrade or damage internal parts of the vehicle’s brake system.
Volkswagen therefore recommends that you use brake fluid that expressly complies with VW Standard 501 14 for optimum brake system performance over the long term.
Brake fluid level
The fluid level in the transparent brake fluid reservoir must always be between the MIN and MAX
marking ⇒ .
On some vehicles, engine components block the view of the brake fluid reservoir and make it impossible to see the brake fluid level. If you cannot clearly see the brake fluid level in the brake fluid reservoir, please see an authorized Volkswagen dealer or authorized Volkswagen Service Facility.
The brake fluid level drops slightly when the vehicle is being used as the brake pads wear and the brakes are automatically adjusted.
Changing brake fluid
Brake fluid must be changed according to the service schedule in your ⇒ booklet Warranty and
Maintenance. Have the brake fluid checked by an authorized Volkswagen dealer or an authorized Volkswagen Service Facility. Refill only with new brake fluid that meets the standards listed above.
WARNING
Brake failure and reduced brake performance can be caused by not having enough brake fluid in the reservoir or by old or incorrect brake fluid.
x Check the brake system and brake fluid level regularly.
x Always change the brake fluid according to the service schedule in your
⇒ booklet Warranty and Maintenance.
x Hard braking with old brake fluid may cause vapor lock. Vapor lock reduces braking performance, increases stopping distances and can even cause total brake failure.
x Always make sure that only the correct brake fluid is used. Only use brake fluid that expressly conforms to VW Standard 501 14 or, if it is not available, only use a high-quality brake fluid that conforms to U.S. Standard FMVSS 116 DOT 4 requirements.
x Using another brake fluid, or one that is not of high quality, can impair the function of the brake system and reduce its effectiveness. If the container does not say that the brake fluid complies with VW Standard 501 14, or U.S. Standard FMVSS 116 DOT 4, do not use it.
x The brake fluid must be new.

WARNING
Poor visibility increases the risk of collisions and other accidents that cause serious personal injuries.
x Always make sure all windows are clear of ice, snow and condensation for good visibility to the front, sides, and rear.
x Maximum heating output and defrosting performance are not possible until the engine has reached operating temperature. Wait until you have good visibility before driving off.
x Always make sure you know how to properly use the climate control system as well as the rear window defroster that you will need for good visibility.
x Never use air recirculation for long periods of time. When the air conditioner is off and recirculation mode is on, condensation can quickly form on the windows and greatly reduce visibility.
x Always switch off recirculation mode when it is not needed.
WARNING
Stale air causes driver fatigue and reduces driver alertness, which can cause accidents, collisions and serious personal injury.
x Never switch off the fan for a long period of time and never use air recirculation for a long period of time because no fresh air will enter the passenger compartment.
NOTICE
x If you think the air conditioner is not working properly or may be damaged, switch it off to help prevent more damage. Have the air conditioner checked by an authorized Volkswagen dealer or an authorized Volkswagen Service Facility.
x Air conditioner repair requires specialized knowledge and special tools. Volkswagen recommends that you see an authorized Volkswagen dealer or an authorized Volkswagen Service Facility.
x Do not smoke when air recirculation is switched on. Smoke drawn into the ventilation system can leave residue on the evaporator and on the dust and pollen active carbon filter, resulting in permanent odors whenever the air conditioner is switched on.
If the air conditioner is switched off, the fresh outside air will not be dehumidified. To help keep the windows from fogging over, Volkswagen recommends leaving the air conditioner (compressor) switched on. Press the !