Engine Control And Emission Control System - Volkswagen Golf 2021 Owner's Manual

sive engine and catalytic converter damage could
result.
·
Fueling your vehicle just one time with leaded
fuel or fuel that contains other metallic additives
can affect the performance of the catalytic con-
verter and cause extensive damage to it.
Engine control and emission
control system
Introduction
WARNING
The vehicle exhaust system and the catalytic con-
verter get very hot. This can cause a fire and seri-
ous personal injury.
·
Never park where parts of the hot exhaust sys-
tem and catalytic converter could ignite flam-
mable materials, such as brush, leaves, dry
grass, spilled fuel, etc.
·
Never apply additional undercoating or rust-
proofing on or near the exhaust manifold, ex-
haust pipes, catalytic converter, or heat shields.
WARNING
California Proposition 65 Warning
·
Engine exhaust, some of its constituents, and
certain vehicle components contain or emit
chemicals known to the State of California to
cause cancer and birth defects and reproductive
harm. In addition, certain fluids contained in ve-
hicles and certain products of component wear
contain or emit chemicals known to the State of
California to cause cancer and birth defects and
reproductive harm.
Catalytic converter
Please read the introductory information and
heed the Warnings and Notice
The catalytic converter provides exhaust gas after-
treatment to help reduce pollutants in the exhaust
gas. To help ensure long service life of the exhaust
system and gasoline engine catalytic converter:
— Only use unleaded fuel → page 222, Fuel types.
— Never completely empty the fuel tank.
— Do not exceed the correct oil level → page 246,
Engine oil.
www.carobook.com
on page 225.

Engine control and emission control system

— Do not tow the vehicle to start it, but use a jump-
start instead → page 233, Jump-starting.
Tips and troubleshooting
Please read the introductory information and
heed the Warnings and Notice
When the ignition is switched on, several warning
and indicator lights come on briefly for a function
check. They go out after a few seconds.
Exhaust system malfunction
If the yellow Malfunction Indicator Light (MIL)
comes on, there is a malfunction in the exhaust sys-
tem that may damage the vehicle:
— Ease off the accelerator.
— Carefully drive to the nearest authorized Volkswa-
gen dealer or authorized Volkswagen Service Fa-
cility to have engine checked.
Engine control/monitoring system misfire
If the yellow Malfunction Indicator Light (MIL) flash-
es, there is a misfire that may damage the vehicle:
— Ease off the accelerator.
— Carefully drive to the nearest authorized Volkswa-
gen dealer or authorized Volkswagen Service Fa-
cility to have engine checked.
If the engine misfires or loses power
If you experience misfires, loss of power or the en-
gine is not running smoothly while driving:
— Reduce speed immediately.
— Drive to nearest qualified workshop at medium
engine speeds and low engine loads.
— If these symptoms occur directly after refuelling,
switch off the engine immediately to avoid any
subsequent damage.
— Have the vehicle checked by an authorized Volks-
wagen dealer or authorized Volkswagen Service
Facility.
WARNING
Failure to heed warning lights and instrument
cluster text messages can cause the vehicle to
break down in traffic and result in a collision and
serious personal injury.
·
Never ignore warning lights or text WARNINGS.
·
Always stop the vehicle as soon as it is safe to
do so.
on page 225.
225