maintenance CADILLAC ELR 2014 Owner's Guide

Black plate (25,1)Cadillac ELR Owner Manual (GMNA-Localizing-U.S./Canada-6081525) -
2014 - Second Edition - 1/22/14
Driving and Operating 9-25
responsive acceleration. DIC
messages indicate reduced
propulsion power, that the engine is
not available, and the need for fuel
or service.
Once the vehicle is refueled, or the
malfunction is corrected, the engine
will start the next time the vehicle is
turned on to perform a self test, and
DIC messages will not be displayed.
Once the engine starts successfully,
normal operation will continue in
either Electric or Extended Range
Mode. The engine may stop running
after the self test is completed
based on the current mode of
operation. SeeFuel System
Messages on page 5-44 and
Service Vehicle Messages on
page 5-49.
Maintenance Modes
Engine Maintenance Mode (EMM)
EMM runs the engine to keep it in
good working condition after
approximately six weeks of no or
very limited engine operation. EMM will force the engine to run, even if
there is a charge to power the
vehicle. When EMM is needed, the
EMM Request screen appears on
the center stack display at vehicle
start.
If Start Maintenance is selected,
EMM will begin. The engine will run
for a set amount of time without
turning off. During EMM, a DIC
message displays to show the
EMM percentage complete.
If Postpone is selected, the EMM
Request screen will appear when
the vehicle is next started. The
EMM request can be delayed for
only one day.
If the EMM request was delayed for
one day, EMM will automatically
start the engine at the next vehicle
start. An EMM Notification screen
will appear in the center stack
display.
If the vehicle shuts off during EMM,
it will restart the next time the
vehicle is driven. A message
displays to indicate that EMM is
active.
If EMM is required and the fuel level
is low, EMM may eventually empty
the fuel tank if fuel is not added.
This will result in reduced, or no
power. An adequate fuel level must
be maintained in the vehicle to keep
it operational. See
Propulsion Power
Messages on page 5-48.

Black plate (26,1)Cadillac ELR Owner Manual (GMNA-Localizing-U.S./Canada-6081525) -
2014 - Second Edition - 1/22/14
9-26 Driving and Operating
Fuel Maintenance Mode (FMM)
FMM tracks average fuel age. Old
fuel can cause engine problems.
If low engine usage causes average
fuel age to exceed approximately
one year, FMM will run the engine to
use up the old fuel. The engine will
run until enough fresh fuel is added
to bring the average fuel age into an
acceptable range. Allowing more old
fuel to be used up by FMM and
adding a larger amount of fresh fuel
will maximize the length of time
before another FMM is needed.
During FMM the engine may turn on
and off.When FMM is needed, the FMM
Request screen appears on the
center stack display at vehicle start.
If Start Maintenance is selected,
FMM will begin. FMM will
automatically continue at each
vehicle start until fresh fuel is
added.
If Postpone is selected, the FMM
Request screen will appear when
the vehicle is next started. The FMM
request can be delayed for only
one day.
If the FMM request was delayed for
one day, FMM will start at the next
vehicle start and display the FMM
Notification screen on the center
stack display.If FMM is required and the fuel level
is low, FMM may eventually empty
the fuel tank if fuel is not added.
This will result in reduced, or no
power. An adequate fuel level must
be maintained in the vehicle to keep
it operational. See
Propulsion Power
Messages on page 5-48.

Black plate (66,1)Cadillac ELR Owner Manual (GMNA-Localizing-U.S./Canada-6081525) -
2014 - Second Edition - 1/22/14
9-66 Driving and Operating
Text will be displayed on the
instrument cluster indicating that a
utility interruption has occurred. See
Instrument Cluster on page 5-7.
Electrical Requirements
for Battery Charging
This vehicle is capable of being
charged with most standard vehicle
charging equipment complying to
one or more of the following:
.SAE J1772
.SAE J2847-2
.IEC 61851-1
.IEC 61851-22
.IEC 61851-23
.IEC 61851-24
.IEC 62196-1
.IEC 62196-2
.IEC 62196-3
.ISO 15118The following are the minimum
requirements for circuits used to
charge this vehicle:
.120 volts/15 amps
.240 volts/20 amps
Charging equipment with a rating of
at least 240 volts/20 amps will
provide the fastest charging time
and best charging efficiency to
recharge the high voltage battery.
240 volt/40 amp circuits provide
flexibility for future vehicle charging
needs. Always follow the charging
equipment installation instructions.
Contact your dealer for more
information.
{Caution
Do not use portable or stationary
backup generating equipment to
charge the vehicle. This may
cause damage to the vehicle's
charging system. Only charge the
vehicle from utility supplied
power.
Fuel
Use of the recommended fuel is an
important part of the proper
maintenance of this vehicle. When
driving in the U.S. and Canada, to
help keep the engine clean and
maintain optimum vehicle
performance, we recommend TOP
TIER Detergent Gasolines. See
www.toptiergas.com for a list of TOP
TIER Detergent Gasolines.
Use premium unleaded gasoline
meeting ASTM specification D4814
with a posted octane rating of 91 or

Black plate (6,1)Cadillac ELR Owner Manual (GMNA-Localizing-U.S./Canada-6081525) -
2014 - Second Edition - 1/22/14
10-6 Vehicle Care
Warning (Continued)
High voltage components are
identified by labels. Do not
remove, open, take apart,
or modify these components.
High voltage cable or wiring has
orange covering. Do not probe,
tamper with, cut, or modify high
voltage cable or wiring.
{Warning
It can be dangerous to work on
your vehicle if you do not have
the proper knowledge, service
manual, tools, or parts. Always
follow owner manual procedures
and consult the service manual
for your vehicle before doing any
service work.
If doing some of your own service
work, use the proper service
manual. It tells you much more about how to service the vehicle
than this manual can. To order the
proper service manual, see
Service
Publications Ordering Information
on page 13-11.
This vehicle has an airbag system.
Before attempting to do your own
service work, see Airbag System
Check on page 3-31.
Keep a record with all parts receipts
and list the mileage and the date of
any service work performed. See
Maintenance Records on
page 11-14.{Caution
Even small amounts of
contamination can cause damage
to vehicle systems. Do not allow
contaminants to contact the fluids,
reservoir caps, or dipsticks.
Hood
To open the hood:
1. Turn the vehicle off before opening the hood. If the vehicle
is on, the engine will start when
the hood is opened. See Electric
Mode on page 9-21 and
Extended Range Mode on
page 9-22.
2. Pull the release handle with this
symbol. It is below the
instrument panel outboard of the
steering wheel.

Black plate (13,1)Cadillac ELR Owner Manual (GMNA-Localizing-U.S./Canada-6081525) -
2014 - Second Edition - 1/22/14
Vehicle Care 10-13
Engine Air Cleaner/Filter
SeeEngine Compartment Overview
on page 10-8 for the location of the
engine air cleaner/filter.
When to Inspect the Engine Air
Filter
Inspect or replace the air filter at the
scheduled maintenance intervals.
See Maintenance Schedule on
page 11-2. If driving in dusty/dirty
conditions, inspect the air filter at
each engine oil change.
How to Inspect the Engine Air
Filter
To inspect the air filter, remove it
from the engine air cleaner/filter
assembly and lightly shake to
release loose dust and dirt. If the air
filter remains covered with dirt, a
new air filter is required.
1. Retaining Clips
2. Air Duct Clamp
3. Electrical Connector
To inspect or replace the air filter:
1. Open the hood. See Hood on
page 10-6.
2. Locate the engine air cleaner/ filter assembly on the passenger
side of the engine compartment.
See Engine Compartment
Overview on page 10-8.
3. Disconnect the air duct by loosening the air duct clamp (2). 4. Disconnect the electrical
connector (3).
5. Lift the retaining clips (1) from the engine air cleaner/filter
assembly.
6. Turn and tilt the air cleaner cover slightly upward and slide it out.
Remove the air filter.
How to Reinstall the Engine
Air Filter
1. Install the air filter into theengine air cleaner/filter
assembly. The outer air filter
seal must be fitted properly in
the engine air cleaner/filter
assembly.
2. Replace the air cleaner cover by lowering it to meet the bottom of
the engine air cleaner/filter
assembly. Place the retaining
clips (1) on the engine air
cleaner/filter assembly and
secure. The rear tabs must be
secured into the lower portion of
the air cleaner.

Black plate (15,1)Cadillac ELR Owner Manual (GMNA-Localizing-U.S./Canada-6081525) -
2014 - Second Edition - 1/22/14
Vehicle Care 10-15
If there seems to be no leak, with
the engine on, check to see if the
cooling fans are running. If the
engine is overheating, the fans
should be running. If it is not, the
vehicle needs service. Turn off the
vehicle.
Cooling System (High
Voltage Battery)
During vehicle operation and also
during charging, the high voltage
battery cells in the vehicle are kept
within a normal operating
temperature range. If the
temperature rises above this
temperature, the battery cooling
system turns on the air conditioning
compressor and cools the coolant
until the correct temperature is
reached. If the temperature falls
below this temperature, a high
voltage heater, located in the
battery, heats the coolant until the
correct temperature is reached.
What to Use
The high voltage battery coolant
reservoir in the vehicle is filled with
a 50/50 mixture of DEX-COOL
®
engine coolant and deionized water.
If using this mixture, nothing else
needs to be added.
The coolant needs to be replaced at
the appropriate interval. See
Maintenance Schedule on
page 11-2.
Checking Coolant
The vehicle must be on a level
surface when checking the coolant
level.
The high voltage battery coolant
reservoir is in the engine
compartment. SeeEngine
Compartment Overview on
page 10-8.
Check to see if coolant is visible in
the high voltage battery coolant
reservoir. If coolant is visible but the
coolant level is below the cold fill
line, there could be a leak in the
cooling system.
The high voltage battery coolant
should only be serviced by a
qualified technician.

Black plate (16,1)Cadillac ELR Owner Manual (GMNA-Localizing-U.S./Canada-6081525) -
2014 - Second Edition - 1/22/14
10-16 Vehicle Care
Cooling System (Power
Electronics and Charger
Modules)
The power electronics and charger
modules are cooled using the same
coolant loop.
The power electronics and charger
modules in the vehicle are kept
below a maximum temperature.
If the temperature rises above this
temperature, the electric cooling
fans will turn on and cool the
coolant until the correct temperature
is reached.
What to Use
The power electronics and charger
modules coolant reservoir in the
vehicle is filled with a 50/50 mixture
of DEX-COOL engine coolant and
deionized water. If using this
mixture, nothing else needs to be
added.The coolant needs to be replaced at
the appropriate interval. See
Maintenance Schedule on
page 11-2.
Checking Coolant
The vehicle must be on a level
surface when checking the coolant
level.
The power electronics and charger
modules coolant reservoir is in the
engine compartment. See
Engine
Compartment Overview on
page 10-8.
Check to see if coolant is visible in
the power electronics and charger
modules coolant reservoir. If coolant
is visible but the coolant level is
below the cold fill line, there could
be a leak in the cooling system.
The power electronics and charger
modules coolant should only be
serviced by a qualified technician.
Engine Coolant
The engine cooling system in the
vehicle is filled with DEX-COOL
engine coolant. The coolant needs
to be replaced every 5 years or
240 000 km (150,000 mi), whichever
occurs first.
The following explains the cooling
system and how to check and add
coolant when it is low. If there is a
problem with engine overheating,
see Engine Overheating on
page 10-19.

Black plate (25,1)Cadillac ELR Owner Manual (GMNA-Localizing-U.S./Canada-6081525) -
2014 - Second Edition - 1/22/14
Vehicle Care 10-25
Electric Drive Unit Shift
Lock Control Function
Check
{Warning
When you are doing this
inspection, the vehicle could
move suddenly. If the vehicle
moves, you or others could be
injured.
1. Before starting this check, be sure there is enough room
around the vehicle. It should be
parked on a level surface.
2. Firmly apply the parking brake. See Electric Parking Brake on
page 9-30.
Be ready to apply the regular
brake immediately if the vehicle
begins to move.
3. With the vehicle off and the brake not applied, press and
hold the POWER
Obutton for more than five seconds to place
the vehicle in Service Only
Mode. See
Power Button on
page 9-16. Without applying the
regular brake, try to move the
shift lever out of P (Park) with
normal effort. If the shift lever
moves out of P (Park), contact
your dealer for service.
Park Brake and P (Park)
Mechanism Check
{Warning
When you are doing this check,
the vehicle could begin to move.
You or others could be injured
and property could be damaged.
Make sure there is room in front
of the vehicle in case it begins to
roll. Be ready to apply the regular
brake at once should the vehicle
begin to move. Park on a fairly steep hill, with the
vehicle facing downhill. Keeping
your foot on the regular brake, set
the electric parking brake.
.To check the electric parking
brake's holding ability: With the
propulsion system active and the
electric drive unit in N (Neutral),
slowly remove foot pressure
from the regular brake pedal. Do
this until the vehicle is held by
the electric parking brake only.
.To check the P (Park)
mechanism's holding ability:
With the propulsion system
active, shift to P (Park). Then
release the electric parking
brake followed by the regular
brake.
Contact your dealer if service is
required.
Wiper Blade Replacement
Windshield wiper blades should be
inspected for wear and cracking.
See the Maintenance Schedule on
page 11-2.

Black plate (26,1)Cadillac ELR Owner Manual (GMNA-Localizing-U.S./Canada-6081525) -
2014 - Second Edition - 1/22/14
10-26 Vehicle Care
Replacement blades come in
different types and are removed in
different ways. For proper type and
length, seeMaintenance
Replacement Parts on page 11-13.
{Caution
Allowing the wiper arm to touch
the windshield when no wiper
blade is installed could damage
the windshield. Any damage that
occurs would not be covered by
your warranty. Do not allow the
wiper arm to touch the windshield.
To replace the windshield wiper
blade:
1. Pull the windshield wiper assembly away from the
windshield.
2. Press the button in the middle of
the wiper arm connector, and
pull the wiper blade away from
the arm connector.
3. Remove the wiper blade.
4. Reverse Steps 1–3 for wiper blade replacement.
Headlamp Aiming
Headlamp aim has been preset and
should need no further adjustment.
If the vehicle is damaged in a crash,
the headlamp aim may be affected.
If adjustment to the headlamps is
necessary, see your dealer.

Black plate (50,1)Cadillac ELR Owner Manual (GMNA-Localizing-U.S./Canada-6081525) -
2014 - Second Edition - 1/22/14
10-50 Vehicle Care
tire inflation pressure label, you
should determine the proper tire
inflation pressure for those tires.)
As an added safety feature, your
vehicle has been equipped with a
tire pressure monitoring system
(TPMS) that illuminates a low tire
pressure telltale when one or more
of your tires is significantly
under-inflated.
Accordingly, when the low tire
pressure telltale illuminates, you
should stop and check your tires as
soon as possible, and inflate them
to the proper pressure. Driving on a
significantly under-inflated tire
causes the tire to overheat and can
lead to tire failure. Under-inflation
also reduces fuel efficiency and tire
tread life, and may affect the
vehicle's handling and stopping
ability.
Please note that the TPMS is not a
substitute for proper tire
maintenance, and it is the driver's
responsibility to maintain correct tire
pressure, even if under-inflation hasnot reached the level to trigger
illumination of the TPMS low tire
pressure telltale.
Your vehicle has also been
equipped with a TPMS malfunction
indicator to indicate when the
system is not operating properly.
The TPMS malfunction indicator is
combined with the low tire pressure
telltale. When the system detects a
malfunction, the telltale will flash for
approximately one minute and then
remain continuously illuminated.
This sequence will continue upon
subsequent vehicle start-ups as
long as the malfunction exists.
When the malfunction indicator is
illuminated, the system may not be
able to detect or signal low tire
pressure as intended. TPMS
malfunctions may occur for a variety
of reasons, including the installation
of replacement or alternate tires or
wheels on the vehicle that prevent
the TPMS from functioning properly.
Always check the TPMS malfunction
telltale after replacing one or more
tires or wheels on your vehicle toensure that the replacement or
alternate tires and wheels allow the
TPMS to continue to function
properly.
See
Tire Pressure Monitor
Operation on page 10-50.
See Radio Frequency Statement on
page 13-15.
Tire Pressure Monitor
Operation
This vehicle may have a Tire
Pressure Monitor System (TPMS).
The TPMS is designed to warn the
driver when a low tire pressure
condition exists. TPMS sensors are
mounted onto each tire and wheel
assembly, excluding the spare tire
and wheel assembly. The TPMS
sensors monitor the air pressure in
the tires and transmit the tire
pressure readings to a receiver
located in the vehicle.