2021 VOLKSWAGEN T-ROC alternator

Symbol Meaning
Auto Hold function ⇒ Auto Hold function .
Adaptive Cruise Control (ACC) ⇒ Switching ACC on and off 
OR
Speed limiter ⇒ Speed limiter .
Lane keeping system (Lane Assist) ⇒ Driving with the lane keeping system .
Main beam or headlight flasher ⇒ Switching main beam on and off .
Coolant ⇒ Coolant temperature display .
Engine oil pressure ⇒ Troubleshooting .
Fault in the alternator ⇒ Troubleshooting .
Adaptive Cruise Control (ACC) ⇒ Switching ACC on and off .
Speed limiter active ⇒ Speed limiter .

Adaptive Cruise Control (ACC) ⇒ Switching ACC on and off .

Distance warning from area monitoring system (Front Assist) ⇒ Warning levels and
braking intervention .
Main-beam control ⇒ Main-beam control .
Service alert or due service ⇒ Service interval display .
Charge level of mobile telephone battery ⇒BookletInfotainment system,.
Outside temperature is below +4°C (+39°F) ⇒ Displays .
Start/Stop system active ⇒ Start/stop system .
Start/stop system not available ⇒ Start/stop system .
Economical mode ⇒ Displays .
Note about information in the vehicle wallet.
Additional displays: trailer towing

The alternator is driven by the engine and generates electrical power for convenience consumers
such as the air conditioning system, windscreen heating and ventilation. Saving electrical energy is
easy, e.g.:
Open the windows and doors before driving at high outside temperatures and drive for a short
distance with a window open. Only then switch the air conditioning system on.
Switch the convenience consumers off as soon as they have served their purpose.

WARNING
Adapt your speed and distance from the vehicles ahead to suit visibility, weather, road and traffic
conditions.

Inform yourself about other ways of protecting the environment. Think Blue. is the global
Volkswagen trademark for sustainability and environmental compatibility.

Your Volkswagen dealership can provide you with further information on maintenance and energy-
efficient replacement parts, e.g. new tyres.
Think Blue. Trainer.
The Think Blue. Trainer analyses and visualises your driving style and helps you to drive more
economically.

Fig. 98 In the Infotainment system: Think Blue. Trainer.
Key to ⇒ Fig. 98 :

Blue Score:
The higher the displayed value on a scale from 0 to 100, the more efficient your driving style. A blue
border symbolises an efficient and constant driving style. A grey border indicates an inefficient
driving style.

unattended.
expansion tank when the engine is hot. Coolant may spray out and cause serious burns and other
injuries.
-clockwise while exerting
gentle downward pressure on the cap.
face, hands and arms from hot coolant or steam with a large, thick cloth.
spilt service fluids can start a fire.

WARNING
High voltages in the electrical system can cause electric shocks, burns, serious injuries and death!
-volt battery could explode.
started, never touch the electrical cables in the ignition system.

WARNING
There are rotating components in the engine compartment that can cause serious injury.

rotor blades can result in serious injuries. The fan is temperature-controlled and can start
automatically, even when the ignition has been switched off or the vehicle key has been removed
from the ignition lock.
e engine is started or with the engine running, there is an
additional, potentially fatal safety risk from the rotating parts, such as the poly V-belt, alternator,
radiator fan, and from the high-voltage ignition system. Always be particularly careful.
Always ensure that no body parts, jewellery, ties, loose items of clothing or long hair can be
caught up in rotating engine components. Before starting work, remove any jewellery and ties, tie
up long hair and pull clothes in tightly to avoid them getting caught on engine parts.
could move, even if the electronic parking brake is applied.
s and tools, in the engine
compartment. Any forgotten items can cause malfunctions, engine damage and fires.

WARNING

-volt vehicle batteries should be charged only in well-ventilated spaces.
-volt vehicle battery. Discharged 12-volt vehicle batteries can
already freeze at temperatures of around 0°C (+32°F).
-volt vehicle battery must be replaced if it has ever been frozen.
the negative cable.

NOTICE
-volt vehicle batteries if the ignition is switched on or the engine is
running. Never use a 12-volt vehicle battery that does not correspond with the vehicle's
specifications. This can damage the electrical system or electronic components and electrical
malfunctions can occur.
to the 12-volt socket or to the cigarette lighter in order to charge the 12-volt vehicle battery. The
electrical system of the vehicle could otherwise be damaged.

12-volt vehicle batteries may contain toxic substances such as sulphuric acid and lead. Dispose of the
12-volt vehicle battery in accordance with the regulations.

Electrolyte can pollute the environment. Collect any service fluids that escape or are spilt and
dispose of them properly.
Troubleshooting
First read and observe the introductoryinformation and safety warnings⇒Introduction 
Vehicle battery (12-volt)
The indicator lamp lights up red.
Fault in the alternator. 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 red and the text message 12 V battery not charging. Stop vehicle.
is displayed.

Fault in the alternator. 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 
⇒ Troubleshooting for Tyre Pressure Loss Indicator 
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.