2013 VOLKSWAGEN PASSAT check engine light

Lights
up
Temperature
gauge needle
⇒ fig. 171
Possible cause Proper response
(B)
Normal range
Engine coolant level too
low.
Check the engine coolant level after the
engine has cooled down and add engine
coolant if low.
If the engine coolant level is correct or the
problem continues after adding coolant, do
not drive any farther. Contact an
authorized Volkswagen dealer or
authorized Volkswagen Service Facility.
These instructions apply only when the
coolant temperature stays in the normal
range. Stop immediately if the needle goes
into the red warning zone (C).
– Engine coolant system
malfunction.

WARNING
Hot steam and hot engine coolant can cause serious burns.
x Never open the hood if you see steam or coolant escaping from the engine compartment.
Always wait until you no longer see or hear steam or coolant escaping from the engine.
x Always let the engine cool down completely before carefully opening the hood. Hot
components will burn skin on contact.
x When the engine has cooled down and you are ready to open the hood:
– Firmly apply the parking brake and shift the transmission into Park (P) (automatic) or
Neutral (manual only).
– Take the vehicle key out of the ignition.
– On vehicles with Keyless Access, make sure that the remote control vehicle key is out
of range of the vehicle and that the vehicle cannot be started by depressing the starter
button ⇒ page 227.
– Always keep children and others away from the engine compartment and never leave
them unsupervised.
x The engine coolant system is under pressure when the engine is hot. Never unscrew the
coolant expansion tank cap when the engine is hot. Hot coolant can spray out and cause
severe burns and other serious injuries.
– Turn the cap slowly and very carefully in a counterclockwise direction while applying
light downward pressure on the top of the cap.
– Always protect your face, hands, and arms from hot escaping coolant or steam by
covering the cap with a large, thick rag.
x Never spill fluids on the engine or exhaust system when refilling. Spilling fluids onto hot
parts of the engine or exhaust system can cause a fire. Under some conditions, the ethylene
glycol in engine coolant can catch fire.
NOTICE
x Use distilled water only when adding coolant! All other types of water contain chemical
compounds that can cause extensive corrosion damage to the engine. This can even lead to
engine failure. If you have added non-distilled water, take the vehicle immediately to an
authorized Volkswagen dealer or an authorized Volkswagen Service Facility to have the
coolant system drained, flushed, and refilled completely with the proper coolant.
x Refill engine coolant only up to the top edge of the marked fill range . Excess engine
coolant may be forced out of the engine cooling system when it gets hot and cause damage.
x In the case of significant engine coolant loss, refill engine coolant only when the engine is
completely cooled down. Significant engine coolant loss is a sign of leaks in the cooling
system. Have the engine cooling system checked immediately by an authorized Volkswagen
dealer or an authorized Volkswagen Service Facility. Otherwise the engine may be damaged!
x When changing or topping off operating fluids, make sure that you pour the fluids into the
correct reservoirs. Serious malfunctions and engine damage can result if you pour operating
fluids into the wrong reservoir.

requirements regarding handling and disposal of the vehicle or parts of its restraint system, including
airbag modules and safety belts with pretensioners. Authorized Volkswagen dealers and authorized
Volkswagen Service Facilities are familiar with the requirements, and we recommend that you have
them perform this service for you.
Emergency starting and starting the engine with a very weak vehicle battery or after the vehicle
battery has been replaced may change or delete settings (including time, date, personal convenience
settings and programming). Check the settings and correct as necessary once the vehicle battery has
built up a sufficient charge.
Warning light

Lights
up Possible cause Proper response
D Diesel engine pre-glow before engine
start-up.
B
Engine control / monitoring system
malfunction (engine Malfunction Indicator
Light - MIL)
Ease off the accelerator. Carefully drive to the
nearest authorized Volkswagen dealer or
authorized Volkswagen Service Facility. Have
engine checked.

Applicable only in the United States and Canada
Frequently asked questions
If you suspect a malfunction or vehicle damage, read and follow the following advice before contacting
an authorized Volkswagen dealer or an authorized Volkswagen Service Facility. You may also find
helpful information under “Characteristics” and “Checklist” in the index.

Description Possible causes, among
others Possible remedy
Engine does not start.
Vehicle battery dead. – Perform jump-start.
– Charge vehicle battery.
The wrong vehicle key is used. Use a valid vehicle key.
Fuel level too low. Refuel.
AdBlue fill level too low. Refill AdBlue.
Vehicle cannot be locked
or unlocked using vehicle
key.
– Battery in the remote control
vehicle key dead.
– Too far away from vehicle
(out of range).
– Buttons have been pressed
too many times.
– Replace the battery in the remote
control vehicle key.
– Move closer to vehicle.
– Synchronize vehicle key.
– Lock or unlock vehicle manually.
Unusual noises.
Cold engine, braking assist
systems, electronic steering
column lock.
Check the “Noises” entry in the index.
Odd driving behavior.
Assistance systems activated. Check the “Assistance systems” entry
in the index.
DSG® Direct Shift Gearbox too
hot.
Stop vehicle as soon as you can do so
safely
Outside mirrors move
when vehicle is unlocked.
Convenience settings are
stored. Correct convenience settings.
Front seats cannot be
adjusted with power
controls.
Vehicle battery dead. Charge vehicle battery.
Fuse blown. Check fuse and replace if necessary.
Features do not work as
described in this manual.
Settings were adjusted in the
Volkswagen Information
System.
Check and reset to factory settings if
necessary.
Headlights do not light up
the road as they should.
– Headlights adjusted too high.
– Light bulbs burned out.
– Low beams not switched on.
– Have the headlight range adjusted by
an authorized Volkswagen dealer or an
authorized Volkswagen Service
Facility.
– Change light bulbs.
– Switch on low beams.
Electrical consumers do
not work.
Vehicle battery charge too low. Charge vehicle battery.
Remaining fuel level too low. Refuel.
Fuse blown. Check fuse and replace if necessary.
Fuel consumption higher
than indicated.
– Short hauls.
– “Jumpy” accelerator pedal.
– Avoid short distance driving.
– Drive defensively.
– Accelerate smoothly.

Description Possible causes among
others Possible remedy
Vehicle has run-flat or mobility
tires.
equipment. Contact an authorized
Volkswagen dealer or an authorized
Volkswagen Service Facility for
assistance.
Features do not work as
described in this manual.
Settings were adjusted in the
Volkswagen Information
System.
Check and reset to factory settings if
necessary.
Headlights do not light up
the road as they should.
– Headlights adjusted too high.
– Light bulbs burned out.
– Low beams not switched on.
– Have the headlight range adjusted by
an authorized Volkswagen dealer or an
authorized Volkswagen Service
Facility.

– Change light bulbs.
– Switch on low beams.
Electrical consumers do
not work.
Vehicle battery charge too low. Charge vehicle battery.
Remaining fuel level too low. Refuel.
Fuse blown. Check fuse and replace if necessary.
Fuel consumption higher
than indicated.
– Short hauls.
– “Jumpy” accelerator pedal.
– Avoid short distance driving.
– Drive defensively.
– Accelerate smoothly.
Electrical loads switched on. Switch off unnecessary loads.
Engine control malfunctioning. Have the malfunction corrected.
Tire pressure too low. Adjust tire pressure.
Driving in the mountains. No direct corrective action possible.
Towing a trailer. – Check use.
– Remove if not in use.
Driving with heavy payload. No direct corrective action possible.
Driving at high engine speed. Select a higher gear.