Get Engine control and emission control system Guide for Volkswagen Golf 4 Door Seventh Generation (2017-2020)

NOTE

You can damage the engine by using incorrect additives.

Using incorrect gasoline additives can cause extensive engine damage as well as damage to the catalytic converter.

If you must fuel your vehicle with gasoline whose octane rating is too low, only drive with the engine speed in the middle of the rpm range and with low

engine load. Avoid high rpm and heavy engine load. Otherwise, the engine could be damaged. Refuel your vehicle with gasoline with the required octane

rating as soon as possible.

Do not use fuel that is labeled at the pump as containing metal. Lead replacement fuel contains high concentrations of metallic additives. Expensive 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 converter and

cause extensive damage to it.

Engine control and emission control system

Introduction to the subject

In this chapter you will find information on the following subjects:

⇒ Indicator lightsꢀ

⇒ Catalytic converterꢀ

WARNING

The vehicle exhaust system and the catalytic converter get very hot. This can cause a fire and serious personal injury.

Never park where parts of the hot exhaust system and catalytic converter could ignite flammable materials, such as brush, leaves, dry grass, spilled fuel,

etc.

Never apply additional undercoating or rustproofing on or near the exhaust manifold, exhaust 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 vehicles 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.

Indicator lights

Read and follow the introductory information and safety information first ⇒ Introduction to the subjectꢀ

Lights up

Possible cause and response

Engine control malfunction (Electronic Power Control).

Have engine checked immediately by an authorized Volkswagen dealer or authorized Volkswagen Service Facility.

Engine speed (rpm) automatically limited to help prevent the engine from overheating (if equipped). ^a)The limited engine speed

is shown in the instrument cluster.

Once the engine is no longer at a critical temperature and you have briefly taken your foot off the accelerator, the engine speed

limit is increased.

If the engine speed is limited due to a malfunction in the engine management system, the

indicator light also lights up. Have

the engine checked immediately by an authorized Volkswagen dealer or authorized Volkswagen Service Facility. Make sure that

the engine speed does not exceed the engine speed displayed, for example, when downshifting.

Engine control/monitoring system malfunction (engine Malfunction Indicator Light - MIL)

258

Lights up

Possible cause and response

Ease off the accelerator. Carefully drive to the nearest authorized Volkswagen dealer or authorized Volkswagen Service

Facility. Have engine checked.

Flashes

Possible cause and response

Misfire, which can damage the catalytic converter.

Ease off the accelerator. Carefully drive to the nearest authorized Volkswagen dealer or authorized Volkswagen Service Facility.

Have the engine checked.

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.

NOTE

Failure to heed warning lights or text WARNINGS can result in vehicle damage.

As long as the indicator lights

are on, expect engine malfunctions, increased fuel consumption, and loss of engine efficiency.

^a)Displayed in color on an instrument cluster with color display.

Catalytic converter

Read and follow the introductory information and safety information first ⇒ Introduction to the subjectꢀ

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 ⇒ Fuel typesꢀ.

Never completely empty the fuel tank.

Do not exceed the correct oil level ⇒ Engine oilꢀ.

Do not tow the vehicle to start it, but use a jump-start instead ⇒ Jump-startingꢀ.

If you experience misﬁres, loss of power or the engine is not running smoothly while driving, reduce speed immediately and have the vehicle checked by an

authorized Volkswagen dealer or authorized Volkswagen Service Facility. Otherwise, gasoline could reach the exhaust system and get into the atmosphere. The

catalytic converter could also be damaged by overheating!

Vehicle care

Tips on vehicle care

Regular and expert care helps to preserve the value of your vehicle. Such expert care may also be one of the requirements of your New Vehicle Limited Warranty

if corrosion repair or repainting is necessary.

The longer insect splatter, bird droppings, tree sap, road dirt, industrial deposits, tar, soot, road salt, and other aggressive materials stay on your vehicle, the more

damage they do to the paint ﬁnish. High temperatures (including strong sunlight) increase the corrosive effects. The vehicle underbody should also be washed

regularly and thoroughly.

Vehicle care products are available from your authorized Volkswagen dealer or authorized Volkswagen Service Facility.

WARNING

Improper care and cleaning of vehicle components can impact the safety features of the vehicle and cause severe injuries.

Always clean and maintain vehicle components according to manufacturer's instructions.

Only use approved or recommended cleaners.

Never use vehicle care products containing solvents. Solvents can damage the airbag housing.

Protect arms and hands from sharp vehicle parts, for example, while cleaning the underside of the vehicle.

WARNING

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Engine control and emission control system for Your Volkswagen Golf 4 Door Seventh Generation (2017-2020)

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