check engine light VOLKSWAGEN T-ROC 2018 Owners Manual

Indicator lamps which light up in the light switch are described in the chapter Lights Lig
Symbol Meaning
Central warning lamp. Observe the additional information on the instrument cluster
display.
Electronic parking brake Operating the electronic parking brake.
Brake system fault
Electromechanical steering not functioning Troubleshooting.
Fasten seat belt Warning lamp.
Collision warning from area monitoring system (Front Assist) Warning levels and

Depress the brake pedal.
Check brake pads Troubleshooting.
Central warning lamp. Observe the additional information on the instrument cluster
display.
Electronic Stability Control (ESC) OR traction control system (TCS) TCS regulating
to
Traction control system (TCS) switched off TCS regulating to prevent the wheels

Fault in anti-lock brake system (ABS)
Fault in electronic parking brake TroubleshootingOR: fault in Hill Start Assist

Rear fog light switched on Switching the fog lights on and off.
Vehicle lighting is not working
Fault in exhaust system Fault
Fault in engine management system Troubleshooting.

18 Coolant temperature gauge in the Active Info Display.
First read and observe the introductory information and safety warnings
Cold area. The engine has not yet reached operating temperature. Avoid high engine revs and
heavy engine loads until the engine is warm.
Normal area.
Warning area. The temperature may also rise to the hot area when the engine is working hard,
especially at high ambient temperatures.
Coolant
The indicator lamp lights up and the central warning lamp flashes red.
The coolant level is not correct or there is a fault in the coolant system.
Do not drive on!
Stop the vehicle, switch off the engine and allow it to cool down.
Check the coolant level Coolant
Seek expert assistance if the warning lamp does not go out although the coolant level is adequate.
Service interval display

Fig. 19 In the instrument cluster display: display example for a due service event (illustration).
First read and observe the introductory information and safety warnings
The service event displays are shown on the instrument cluster Fig. 19and in the Infotainment
system.
Versions and displays can vary as different versions of the instrument cluster and Infotainment
system are available.
In vehicles with fixed oil change service, services take place at predefined service intervals.

nment system can
distract you from the road.
Always drive carefully and responsibly.
Information on the brakes
New brake pads cannot generate the full braking effect during the first 200 to 300 km and must first
be run in
pressure on the brake pedal. During the run-in period, the braking distance is longer for full or
emergency braking than when the brake pads have been run in. In the run-in period, full braking
should be avoided and also situations that create a heavy load on the brakes, e.g. when driving up
close to the vehicle ahead.
The wear of the brake pads depends to a great extent on the conditions under which the vehicle is
operated and the way the vehicle is driven. If the vehicle is used for regular urban trips, short
journeys, and is driven with a sporty driving style, the brake pads must be regularly checked by a
qualified workshop.
When driving with wet brakes, for example after driving through water, after heavy rainfall or after
washing the vehicle, the braking effect may be delayed as the brake discs will be wet, or possibly
iced up (in winter). The brakes must be dried as quickly as possible by careful braking at higher
speed. Please ensure that no following vehicle and no other road user is put at risk as a result of this
action
A layer of salt that accumulates on the discs and pads will reduce the braking effect and increase the
braking distance. If the vehicle has not been braked for a long time on roads which have been gritted
with salt, the layer of salt must be reduced through careful braking
Corrosion on the brake discs and dirt in the brake pads are facilitated through long standstill times,
low mileage and low load levels. If the brake pads have been hardly used or if they are corroded,
Volkswagen recommends that the brake discs and brake pads be cleaned by braking strongly several
times from high speed. Please ensure that no following vehicle and no other road user is put at risk
as a result of this action
Brake servo
The brake servo will function only when the engine is running and reinforces the pressure applied by
the driver on the brake pedal.
If the brake servo does not function or the vehicle is being towed, the brake pedal will have to be
depressed more forcefully as the braking distance will be increased due to the lack of assistance for
the brake system

WARNING
Driving with worn brake pads or with a faulty brake system can cause accidents and serious injuries.
If the warning lamp lights up either alone or together with a text message in the instrument
cluster display, go to a qualified workshop immediately to have the brake pads checked and the
worn brake pads replaced.

Fig. 101 On the right-hand side of the steering column: emergency start function in vehicles with the
keyless locking and starting system Keyless Access.
Fault in engine management system
The indicator lamp lights up yellow.
Fault in the engine management system.
The engine should be checked by a qualified workshop as soon as possible.
Engine speed limited
The indicator lamp lights up yellow.
The engine speed was limited to prevent the engine from overheating.
The engine speed is shown on the instrument cluster display.
The engine speed limitation will be cancelled again in the following cases:
Engine is no longer in a critical temperature range.
Foot is taken off the accelerator.
together with engine speed limitation due to fault in the engine management system
The indicator lamps light up yellow.
Engine speed limitation is activated due to a fault in the engine management system.
Make sure that the displayed engine speed is not exceeded.
The engine should be checked by a qualified workshop as soon as possible.
Glow plug system/engine management system
Vehicles with diesel engine:
The indicator lamp lights up yellow.
When the diesel engine is being pre-heated, the indicator lamp lights up in the instrument cluster for
a few seconds.

The steering should be checked by a qualified workshop as soon as possible.
If the yellow warning lamp remains off after the engine has been restarted and you have driven a
short distance, you do not need to consult a qualified workshop.
Fault in steering
The indicator lamp lights up yellow.
The 12-volt vehicle battery was disconnected.
Drive a short distance at a speed of 15 20 km/h (9 12 mph).
If the yellow warning lamp is still lit after the engine has been restarted, have the steering checked
by a qualified workshop immediately.
Fault in steering
The indicator lamp flashes yellow.
Turn the steering wheel back and forth.
Switch the ignition off and then on again.
Observe the messages on the instrument cluster display.
Do not continue your journey if the indicator lamp still flashes when the ignition is switched on.
Seek expert assistance.
Steering column is not unlocked or locked
The indicator lamp flashes yellow.
Follow any messages that are on the instrument cluster display.
Switch the ignition off and then on again.
Do not continue your journey if the steering column remains locked when the ignition is switched
on.
Seek expert assistance.
Steering requires increased force
The warning lamp lights up red.
The electromechanical steering has failed.
Do not drive on!
Seek expert assistance.
Driving profile selection and 4MOTION Active Control

If you do not maintain the minimum distance to a vehicle in front and the difference in speed
between the vehicle in front and your own vehicle is so great that the braking action of the ACC is
insufficient, you are in danger of colliding with the vehicle in front. The braking distance is also
longer in rain and winter road conditions.
ACC may not be able to detect all driving situations correctly.
Always be prepared to brake the vehicle yourself.
Speed and distance control are overridden when you press the accelerator. ACC does not brake
automatically in this case.
Observe any country-specific regulations relating to the minimum distance.
Always set a larger distance in wet or snowy conditions or when visibility is poor.

Some settings can be stored in the user accounts of the personalisation function and therefore
change automatically when the user account changes Personalisation
Troubleshooting
First read and observe the introductoryinformation and safety warnings
ACC not available.
The indicator lamp lights up yellow.
The radar sensor is dirty. Clean the radar sensor Vehicle care
The visibility of the radar sensor is impaired due to the weather conditions, e.g. snow, or due to
detergent deposits or coatings. Clean the radar sensor Vehicle care
The visibility of the radar sensor is impaired by add-on parts, the trim frames of number plate
holders or stickers. Keep the area around the radar sensor free.
The radar sensor has been displaced or damaged, e.g. due to damage to the front of the vehicle.
Check whether damage is visible Repairs and technical modifications
Fault or malfunction. Switch off and restart the engine.
Structural modifications have been made to the front of the vehicle.
The genuine Volkswagen badge is not used.
If the problem persists, go to a qualified workshop.
ACC does not function as expected.
The radar sensor is dirty. Clean the radar sensor Vehicle care
The system limits are not met Limits of ACC

Clean the radar sensors or remove stickers or accessories from the radar sensors, mirrors and
bumper Caring for and cleaning the vehicle exterior
Check whether any damage is visible.
The system is not responding as expected
The radar sensors are dirty. The sensor visibility may be impaired by dirt and snow or also residue
from cleaning agents or coatings Caring for and cleaning the vehicle exterior
The prerequisites for system operation must be met System limits
The radar sensors are covered by water.
The vehicle is damaged in the area of the radar sensors, e.g. caused by parking collisions.
The detection ranges of the radar sensors are blocked by add-on parts, e.g. bicycle carriers.
Changes have been made to the paintwork in the area of the radar sensors or structural
modifications have been made, e.g. on the vehicle front end or the running gear.
Only Volkswagen-approved vehicle paints may be used on the rear bumper. Other vehicle paints can
restrict the function of the system or cause faults.
Tinting foils have been retrofitted on the side windows.
Parking and manoeuvring
Parking
Stopping and parking the vehicle
The actions should be carried out only in the given order:
Stop the vehicle on a suitable surface
Depress and hold the brake pedal until the engine has stopped.
Switch on the electronic parking brake Electronic parking brake is
switched on when the indicator lamp in the button Fig. 125lights up yellow and the indicator
lamp in the instrument cluster display lights up red.
On vehicles with a manual gearbox, either fully depress or disengage the clutch.
With an automatic gearbox, move the selector lever to position P.
Switch off the engine and take your foot off the brake pedal.
Turn the steering wheel slightly if necessary to engage the steering lock mechanism.
With a manual gearbox, select first gear for flat ground and uphill gradients, or reverse gear for
downhill gradients, and then release the clutch.
Please ensure that all occupants, in particular children, leave the vehicle.

Petrol
Refuelling
Checking the engine oil level and refilling the engine oil
Jump starting the vehicle
If you notice misfiring, loss of power or uneven running when driving, reduce speed immediately and
have the vehicle checked by a qualified workshop Troubleshooting
enter the exhaust system and escape into the atmosphere. The catalytic converter can also be
damaged by overheating.

The emissions may have a sulphur-like smell even when the exhaust purification system is working
properly.
Particulate filter
First read and observe the introductoryinformation and safety warnings
Function
Fuel standards
Refuelling
Engine oil sta
Jump starting the vehicle
Periodic regeneration
The soot in the particulate filter is burnt off at high temperatures on a periodic basis.
To assist the regeneration of the particulate filter, Volkswagen recommends that you avoid making
only short journeys.
Noises, slight smells and increased engine speeds may occur during regeneration. The radiator fan
may run on while the vehicle is moving or when the engine has been switched off.

During the periodic regeneration process, the yellow indicator lamp does not light up.
Troubleshooting
First read and observe the introductoryinformation and safety warnings
Irregular engine running and faults

Additional bulb specifications
Some bulbs in headlights or in tail light clusters might have factory specifications that are different to
standard bulbs. The designation is inscribed on the bulb, either on the glass part or on the base.

WARNING
Accidents can occur if roads are not sufficiently illuminated and other road users have difficulty
seeing the vehicle, or cannot see it at all.

WARNING
Changing bulbs incorrectly can cause accidents and serious injuries.
In the
engine compa
injuries can be sustained here.


change a bulb unless you are familiar with the procedure. If you are uncertain of what to
do, the work should be carried out by a qualified workshop.
heat will cause fingerprints to evaporate on the bulb, which in turn will cause the reflector to go
blind.
-edged parts in the headlight housing in the engine compartment and on the tail
light cluster housing. Protect your hands when changing bulbs.

NOTICE
Damage to the electrical system can be caused by water entering the system if the rubber cover or
plastic covers on the headlight housing are not properly mounted after a bulb has been changed.
Checklist Information on changing bulbs

bulb would cause the remaining fingerprint to evaporate and be deposited on the reflector. This will
impair the light output of the headlight.

After changing a bulb, check to ensure that the bulb is working properly. If the bulb is not working
properly, the bulb may not have been inserted properly, may have failed again, or the connector
may have been fitted incorrectly.

Any time you change a bulb at the front of the vehicle, the headlight settings should be checked by a
qualified workshop.

WARNING
Ignoring any of the items on this important safety checklist can lead to accidents and severe injuries.


NOTICE
Always take care when removing or fitting lights to prevent damage to the paintwork or to other
vehicle parts.
Changing bulbs in the front headlights (halogen bulbs)

Fig. 166 In engine compartment: covers on the left-