check engine light VOLKSWAGEN T-ROC 2018 User Guide

Fig. 167 In the engine compartment: changing bulbs in the left front headlight.
First read and observe the introductoryinformation and safety warnings
The front headlight does not need to be removed when changing bulbs.
The actions should always be carried out in the specified order:
Fig. 166and Fig. 167
Observe and follow the instructions on the checklist Checklist Information on changing
bulbs
Open the bonnet In the engine compartment

Pull off the rubber cover on the rear side of the headlight. Depending on the version, a hard plastic
cover may be fitted here. Turn the cover anti-clockwise and remove it.

Dipped beam

Main beam
back and out.

Replace the defective bulb with a new bulb of the same type.

Dipped beam it will go.
Main beam

t clockwise as far as it will go.
Close the bonnet In the engine compartment
Changing the bulbs in the headlights (lights with LED technology)
First read and observe the introductoryinformation and safety warnings
These lamps use LED technology. The LEDs cannot be replaced by customers. If some LEDs fail, this
may be an indication that more elements are on the point of failure. In this case, have the lights
checked and renewed if necessary at a qualified workshop.
Changing the front turn signal bulbs

Fig. 168 In the front right wheel housing liner: changing a turn signal bulb.
First read and observe the introductoryinformation and safety warnings
The actions should only be carried out in the specified order:
Observe and follow the instructions in the checklist Checklist Information on changing
bulbs
Turn the steering so that the wheel on the affected side of the vehicle is pointing to the
middle of the vehicle. If necessary, start the engine to do this. Then stop the engine again and
remove the vehicle key from the ignition lock.
Turn the cover in the wheel housing liner in the direction of the arrow and remove it
Fig. 168
Release the connector Fig. 168
Turn the bulb holder Fig. 168clockwise (arrow) as far as it will go and pull it out to
the rear along with the bulb.
Replace the defective bulb with a new bulb of the same type.
Insert the bulb holder into the headlight and turn it clockwise as far as it will go.

You can check whether your vehicle is equipped for the Flexible Service QI6 (Longlife) or Fixed
Service QI1, QI2, QI3, QI4, QI7 (dependent on time or mileage) in the vehicle data Technical data
or on the inside cover of this owner's manual.
Permitted engine oil standards
Petrol engineswith particulate filter1)
Flexible ServiceVW 508 00 or alternatively VW 504 002)Fixed ServiceVW 502 00
Petrol engineswithout particulate filter
Flexible ServiceVW 508 00 or alternatively VW 504 00Fixed ServiceVW 502 00
Diesel engineswith particulate filter1)
Flexible ServiceVW 507 00Fixed ServiceVW 507 00
Diesel engineswithout particulate filter
Flexible ServiceVW 507 00Fixed ServiceVW 505 01
Volkswagen recommends engine oils.

NOTICE
additives is not covered by the warranty.
Using other engine oils can cause engine damage.
d engine oils are not
available. To avoid damaging the engine, a maximum quantity of 0.5 litres of the following engine oil
may be used only once until the next oil change:
SN (API SM).
ards ACEA C3 or API CJ-4.
1) Check with a qualified workshop if you are unsure whether your vehicle is equipped with a
particulate filter. Volkswagen recommends using a Volkswagen dealership for this purpose.
2) Using VW 504 00 instead of VW 508 00 may cause the vehicle's emissions values to increase
slightly.
Changing engine oil
First read and observe the introductoryinformation and safety warnings

lfunctions and engine
damage.

The engine oil level must never be above area Fig. 186
the crankcase breather and escape into the atmosphere via the exhaust system.
Troubleshooting
First read and observe the introductoryinformation and safety warnings
and Engine oil pressure too low
The central warning lamp lights up red and the text message Stop vehicle. Oil pressure. Observe
vehicle wallet is displayed.
Do not drive on!
Switch off the engine and check the engine oil level. Checking the engine oil level Checking the
Do not drive on or allow the engine to run if the
warning lamp is flashing although the engine oil level is correct. The engine could otherwise be
damaged. Seek expert assistance.
and Engine oil level too low
The central warning lamp lights up red and the text message Refill engine oil. is displayed.
Engine oil level is too low. Switch off the engine.
Checking the engine oil level Checking the engine oil level and refilling the engine oil
and Engine oil level low
The central warning lamp lights up yellow and the text message Check oil level. is displayed.
Engine oil level is low. Switch off the engine.
Checking the engine oil level Checking the engine oil level and refilling the engine oil
and Fault in engine oil system
The central warning lamp lights up yellow and the text message Oil sensor: workshop. is displayed.
Engine oil system is faulty. Go to a qualified workshop and have the engine oil sensor checked.
and Engine oil level too high
The central warning lamp lights up yellow and the text message Reduce oil level. is displayed.
Engine oil level is too high. Switch off the engine.
Check the engine oil level. Checking the engine oil level Checking the engine oil level and refilling
the engine oil

Fig. 188 In the engine compartment: markings on the coolant expansion tank.

Fig. 189 In the engine compartment: coolant expansion tank cap (illustration).
First read and observe the introductoryinformation and safety warnings
The warning lamp for the engine coolant will light up if the engine coolant level is too low.
Preparations


nnet In the engine compartment
on the cap Fig. 189
Checking the coolant level
tank Fig. 188
When the engine is warm, the engine coolant level may be slightly above the maximum (MAX) mark.
Refilling coolant
the cap of the coolant expansion tank.

Coolant specification

standard 501 14 is available from Volkswagen dealerships.
If this brake fluid is not available and it is necessary to use another high-quality brake fluid instead,
brake fluid that is compliant with DIN ISO 4925 CLASS 4 or US standard FMVSS 116 DOT 4 can be
used.
Not all brake fluids that are compliant with DIN ISO 4925 CLASS 4 or US standard FMVSS 116 DOT 4
have the same chemical composition. Some of these brake fluids may contain chemicals that can
damage or destroy brake system components over time.
Volkswagen therefore recommends the use of brake fluid that is compliant with VW standard 501 14
to ensure sustained proper operation of the brake system.
Brake fluid that is compliant with VW standard 501 14 fulfils the requirements of DIN ISO 4925
CLASS 4 or US standard FMVSS 116 DOT 4.
Brake fluid level
The brake fluid level must always be between the MIN and MAX marking on the brake fluid reservoir
or above the MIN marking
The brake fluid level cannot be checked accurately in all models as engine components may partially
conceal the fluid level in the brake fluid reservoir. If the brake fluid level cannot be read exactly,
please go to a qualified workshop.
The brake fluid level drops slightly during vehicle operation as the brake pads wear and the brakes
are automatically adjusted.
Brake fluid level
The indicator lamp lights up red.
Brake fluid level is too low.
Do not drive on! Check the brake fluid level.
If the brake fluid level is too low, inform a qualified workshop. Have the brake system checked.
Changing the brake fluid
The brake fluid should be changed by a qualified workshop. Volkswagen recommends using a
Volkswagen dealership for this purpose. Only brake fluid that conforms with the required
specification should be used.

WARNING
Brake failure or reduced braking efficiency can be caused by the brake fluid level being too low or by
brake fluid that is too old or unsuitable.

Fig. 192 Battery window on the top of the 12-volt vehicle battery (illustration).
First read and observe the introductoryinformation and safety warnings
The electrolyte level of the 12-volt vehicle battery should be checked regularly in high-mileage
vehicles, in hot countries and in older 12-volt vehicle batteries. The 12-volt vehicle battery is
otherwise maintenance-free.
Vehicles with an auxiliary heater Auxiliary heater and ventilationare fitted with special vehicle
batteries. The electrolyte level of these 12-volt vehicle batteries cannot be checked for technical
reasons. Go to a qualified workshop to have the 12-volt vehicle battery checked.
Preparations
eparing the vehicle for working in the engine compartment In the engine compartment
In the engine compartment
Checking the electrolyte level (12-volt vehicle batteries with battery window)
e for you to clearly see the colour indicator in the round
battery window on the top of the 12-volt vehicle battery Fig. 192(arrow). Never use naked
flames or glowing objects as a light source.
s according to the electrolyte level in the
12-volt vehicle battery.
Light yellow or without colourThe electrolyte level of the 12-volt vehicle battery is too low. The 12-
volt vehicle battery should be checked and replaced by a qualified workshop if necessary.BlackThe
electrolyte level of the 12-volt vehicle battery is correct.

WARNING
Any work on the 12-volt vehicle battery can cause serious chemical burns, explosions and electric
shocks.

-volt vehicle battery
-volt vehicle
battery.
e cable and then the negative cable
Various indicator lamps may light up after the 12-volt vehicle battery has been connected and the
ignition is switched on. They will go out when you drive a short distance at a speed of approximately
15 20 km/h (10 12 mph). If the indicator lamps remain lit up, the vehicle should be checked by a
qualified workshop.
If the 12-volt vehicle battery was disconnected for an extended period, the system may not able to
calculate or correctly display the time when the next service is due Instrument cluster
the maximum permissible service intervals Service
Automatic switch-off for electrical consumers
The intelligent vehicle electrical system management function automatically implements a range of
measures to prevent the 12-volt vehicle battery from discharging under high loads:


power supply to the 12-volt socket and the cigarette lighter may be interrupted temporarily
while the engine is being started.
The vehicle electrics management system cannot always prevent the 12-volt vehicle battery from
being discharged, for example if the ignition is left on over a long period with the engine off or the
side lights or parking lights are left on over a long period of time.
12-volt vehicle battery is discharged
gnition is switched on.

Auxiliary heater and ventilation

WARNING
Incorrectly mounting the battery and using incorrect 12-volt vehicle batteries can cause short
circuits, fire and serious injuries.
-free and leak-proof 12-volt vehicle batteries that have the same
properties, specifications and dimensions as the factory-fitted 12-volt vehicle battery.

WARNING
A highly explosive mixture of gases is given off when the 12-volt vehicle battery is being charged.

ator. The 12-volt vehicle battery will not be charged by the alternator while the
vehicle is in motion.
Switch off any electrical consumers that are not required. Inform a qualified workshop. Have the
electrical system checked.
The start/stop system cannot start the engine Start/stop system
and vehicle battery (12-volt)
The central warning lamp lights up yellow and the text message 12 V battery low. Charge by driving.
is displayed.
The charge level of the vehicle battery is insufficient.
Recharge the 12-volt vehicle battery by driving the vehicle for an extended time.
The start/stop system cannot start the engine Start/stop system
and vehicle battery (12-volt)
The central warning lamp lights up red and the text message Replace 12 V battery. Workshop. is
displayed.
The vehicle battery condition is not ok.
Seek expert assistance and have the battery checked and replaced if necessary.
The start/stop system cannot start the engine Start/stop system
Wheels and tyres
Tyre monitoring system
Introduction
This chapter contains information on the followingsubjects:
Tyre Pressure Loss Indicator
Troub
The tyre monitoring system warns the driver when the tyre pressures are too low.
The tyre monitoring system monitors various parameters (for example, rolling circumference) of all
wheels using ABS sensors (indirect measurement).

WARNING
The intelligent tyre monitoring system technology cannot overcome the laws of physics, and
functions only within the limits of the system. Incorrect handling of the wheels and tyres can lead to
a sudden loss of pressure in the tyres, tread separation and even tyre blow-out.