2012 Acura MDX engine overheat

Your Vehicle at a Glance(main controls)
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3
Driver and Passenger Safety(seat belts, SRS, and child protection)
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5
Instruments and Controls(indicators, gauges, multi-information display, dashboard, and steering column)
...........
65
Features(
climate control, audio, rear entertainment, steering wheel, security, cruise control, and other convenience items
)..
181
Before Driving(fuel, vehicle break-in, and cargo loading)
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421
Driving(engine and transmission operation)
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439
Maintenance(minder, fluid checking, minor services, and vehicle storage)
...........................................................
505
Taking Care of the Unexpected(flat tire, Jump starting, overheating, and fuses)
...................................................
549
Technical Information(vehicle specifications, tires, and emissions controls)
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575
Warranty and Client Relations (U.S. and Canada only)(warranty and contact information)
...............................
593
Index
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I
INDEX
Service Information Summary(fluid capacities and tire pressures)
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last page
Contents
1

Your vehicle is equipped with a tire
pressure monitoring system (TPMS)
that turns on every time you start the
engine and monitors the pressure in
your tires while driving.
Each tire has its own pressure
sensor. If the air pressure of a tire
becomes significantly low, the sensor
in that tire immediately sends a
signal that causes the low tire
pressure/TPMS indicator in the
instrument panel to come on. If this
happens, you will see which tire is
losing pressure on the multi-
information display along with a
‘‘CHECK TIRE PRESSURE’’
message.
Low Tire Pressure/
TPMS Indicator
When the low tire pressure/TPMS
indicator is on, one or more of your
tires is significantly underinflated.
You should stop and check your tires
as soon as possible, and inflate them
to the proper pressure as indicated
on the vehicle's tire information
placard.
It is possible that the pressures
shown on the multi-information
display and the pressures you
manually measure are slightly
different.
If the difference is significant or you
cannot make the low tire pressure/
TPMS indicator and message on the
multi-information display go out after
inflating the tires to the specified
values, have your dealer check the
system as soon as possible.If you think you can safely drive a
short distance to a service station,
proceed slowly to the station, then
inflate the tire to the recommended
pressure.
If the tire is flat, or if the tire pressure
is too low to continue driving, replace
the tire with the compact spare tire
(see page 551).
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.
Because tire pressure varies by
temperature and other conditions,
the low tire pressure/TPMS
indicator may come on unexpectedly.
CONTINUED
Tire Pressure Monitoring System (TPMS)
455
Driving

Towing Speeds and GearsDrive slower than normal in all
driving situations, and obey posted
speed limits for vehicles with trailers.
Use the D position when towing a
trailer on level roads. See‘‘
Driving on
Hills
’’for additional gear information.
When towing a fixed-sided trailer (e.
g., camper), do not exceed 55 mph
(88 km/h). At higher speeds, the
trailer may sway or affect vehicle
handling.If the automatic transmission fluid
temperature increases and exceeds
the specified limit, the A/T
temperature indicator comes on (see
page 72). You will also see a‘‘A/T
TEMP HIGH’’message on the multi-
information display.
Making Turns and BrakingMake turns more slowly and wider
than normal. The trailer tracks a
smaller arc than your vehicle, and it
can hit or run over something the
vehicle misses.
Allow more time and distance for
braking. Do not brake or turn
suddenly as this could cause the
trailer to jackknife or turn over.
Driving on HillsWhen climbing hills, closely watch
your temperature gauge. If it nears
the red (Hot) mark, turn the air
conditioning off, reduce speed and, if
necessary, pull to the side of the road
to let the engine cool.
If you must stop when facing uphill,
use the foot brake or parking brake.
Do not try to hold the vehicle in place
by pressing on the accelerator, as
this can cause the automatic
transmission to overheat.
When driving down hills, reduce
your speed and shift down to S
position, or use the paddle shifters to
lower gear (3 or 2) in the S position.
When towing a trailer, do not‘‘ride’’
the brakes, and remember, it takes
longer to slow down and stop when
towing a trailer.
CONTINUED
Towing a Trailer
497
Driving

Replacing Front Fog/Daytime
Running Light Bulbs
Your vehicle uses halogen light
bulbs. When replacing a bulb, handle
it by its plastic case, and protect the
glass from contact with your skin or
hard objects. If you touch the glass,
clean it with denatured alcohol and a
clean cloth.Halogen bulbs get very hot when lit.
Oil, perspiration, or a scratch on the
glass can cause the bulb to overheat
and shatter.
1. To change the bulb on the driver's
side, start the engine, turn the
steering wheel all the way to the
right, then turn off the engine. To
change the bulb on the
passenger's side, turn the steering
wheel to the left.
2. Remove the bolt and use the flat-
tip screwdriver to remove the
holding clips located under the
front bumper.
3. Use a flat-tip screwdriver to
remove the holding clip from the
inner fender, and remove the
screw with a Phillips-head
screwdriver.
4. Pull the inner fender cover away
from the fender and bumper.
BOLT
HOLDING
CLIP
HOLDING
CLIP
SCREW
Lights530

This section covers the more
common problems that motorists
experience with their vehicles. It
gives you information about how to
safely evaluate the problem and what
to do to correct it. If the problem has
stranded you on the side of the road,
you may be able to get going again. If
not, you will also find instructions on
getting your vehicle towed.Compact Spare Tire
....................
550
Changing a Flat Tire
...................
551
If the Engine Won't Start
.............
557
Jump Starting
..............................
558
If the Engine Overheats
..............
560
Low Oil Pressure Indicator
.........
562
Charging System Indicator
.........
562
Malfunction Indicator Lamp
........
563
Brake System Indicator
...............
564
Fuses
..........................................
565
Fuse Locations
............................
569
Opening the Fuel Fill Door
Manually
.................................
572
Emergency Towing
.....................
572
If Your Vehicle Gets Stuck
..........
573
Taking Care of the Unexpected
549
Taking Care of the Unexpected

The pointer of your vehicle's
temperature gauge should stay in the
midrange under most conditions. If it
climbs to the red mark, you should
determine the reason (hot day,
driving up a steep hill, etc.).
If the vehicle overheats, you should
take immediate action. The only
indication may be the temperature
gauge climbing to or above the red
mark. Or you may see steam or spray
coming from under the hood.Driving with the temperature gauge
pointer at the red mark can cause
serious damage to the engine.
Steam and spray from an
overheated engine can
seriously scald you.
Do not open the hood if steam
is coming out.1. Safely pull to the side of the road.
Put the transmission in Park, and
set the parking brake. Turn off all
accessories, and turn on the
hazard warning indicators.
2. If you see steam and/or spray
coming from under the hood, turn
off the engine. Wait until you see
no more signs of steam or spray,
then open the hood.
3. If you do not see steam or spray,
leave the engine running and
watch the temperature gauge. If
the high heat is due to
overloading, the engine should
start to cool down almost
immediately. If it does, wait until
the temperature gauge comes
down to the midpoint, then
continue driving.
If the Engine Overheats560

4. If the temperature gauge stays at
the red mark, turn off the engine.
5. Look for any obvious coolant
leaks, such as a split radiator hose.
Everything is still extremely hot,
so use caution. If you find a leak, it
must be repaired before you
continue driving (seeEmergency
Towingon page 572).
6. If you do not find an obvious leak,
check the coolant level in the
radiator reserve tank. Add coolant
if the level is below the MIN mark.
7. If there was no coolant in the
reserve tank, you may need to add
coolant to the radiator. Let the
engine cool down until the pointer
reaches the middle of the
temperature gauge, or lower,
before checking the radiator.
Removing the radiator cap
while the engine is hot can
cause the coolant to spray out,
seriously scalding you.
Always let the engine and
radiator cool down before
removing the radiator cap.
8. Using gloves or a large heavy
cloth, turn the radiator cap
counterclockwise, without pushing
down, to the first stop. After the
pressure releases, push down on
the cap, and turn it until it comes
off.9. Start the engine and set the
climate control to AUTO at‘‘Hi.’’
Add coolant to the radiator up to
the base of the filler neck. If you
do not have the proper coolant
mixture available, you can add
plain water. Remember to have the
cooling system drained and refilled
with the proper mixture as soon as
you can.
10. Put the radiator cap back on
tightly. Run the engine, and check
the temperature gauge. If it goes
back to the red mark, the engine
needs repair (seeEmergency
Towingon page 572).
11. If the temperature stays normal,
check the coolant level in the
radiator reserve tank. If it has gone
down, add coolant to the MAX
mark. Put the cap back on tightly.
If the Engine Overheats
561
Taking Care of the Unexpected

Coolant
Adding
....................................
520
Checking
................................
427
Proper Solution
.......................
520
Temperature Gauge
.................
78
Crankcase Emissions Control
System
...................................
587
Cruise Control Indicator
...............
75
Cruise Control Operation
...........
345
Cruise Main Indicator
..................
75
Cup Holders
...............................
174
Customize Settings
......................
90
D
DANGER, Explanation of
..............
iv
Dashboard
...............................
3, 66
Daytime Running Lights
............
130
Dead Battery
..............................
558
Defogger, Rear Window
.............
132
Defrosting the Windows
............
186
Dimensions
................................
578
Dimming the Headlights
............
128
Dipstick
Automatic Transmission
.........
523Engine Oil
...............................
427
Directional Signals
...............
71, 128
Disc Brake Wear Indicators.......
461
Disc Care
...................................
247
Disc Changer
.............................
203
Disc Changer Error
Messages
...............................
211
Disc Player
..........................
203, 235
Disc Player Error Messages......
246
Disposal of Used Oil
...................
519
Doors
Childproof Door Locks
............
141
Indicator
...................................
12
Locking and Unlocking
...........
140
Lockout Prevention
.................
141
DOT Tire Quality Grading (U.S.
Vehicles)
................................
581
Driver and Passenger Safety
..........
5
Driving
.......................................
439
Economy
.................................
428
Driving Guidelines
.....................
440
Driving Position Memory
System
...................................
168
Driving with the Paddle
Shifters
...................................
447
Dust and Pollen Filter
................
534DVD Player
................................
313
DVD Player Error Messages
......
337
E
Economy, Fuel
...........................
428
Emergencies on the Road
..........
549
Battery, Jump Starting
.............
558
Brake System Indicator
.....
69, 564
Changing a Flat Tire
...............
551
Charging System
Indicator
........................
69, 562
Checking the Fuses
................
566
Driving with a Flat Tire
...........
551
Hazard Warning Flashers
.......
132
Jump Starting
..........................
558
Low Oil Pressure
Indicator
........................
69, 562
Malfunction Indicator
Lamp
.............................
69, 563
Opening the Fuel Fill Door
Manually
.............................
572
Overheated Engine
.................
560
Towing
....................................
572
Emergency Brake
......................
164
CONTINUED
Index
III
INDEX