2005 SATURN L-SERIES ECU

During normal operation, the security light will go off
approximately five seconds after the key is turned
to RUN following an engine start.
If the engine stalls and the security light flashes, wait
until the light stops flashing before trying to restart
the engine. Remember to release the key from START
as soon as the engine starts.
If the engine is running and the security light comes on,
you will be able to restart the engine if you turn the
engine off. However, your Passlock
®system is
not working properly and must be serviced by your
retailer. Your vehicle is not protected by Passlock
®at
this time. You may also want to check the fuses,
seeFuses and Circuit Breakers on page 5-83. See your
retailer for service. Also, seeRoadside Assistance
Program on page 7-5for more information.
Starting and Operating Your
Vehicle
New Vehicle Break-In
Notice:Your vehicle does not need an elaborate
break-in. But it will perform better in the long run if
you follow these guidelines:
Do not drive at any one speed — fast or
slow — for the rst 500 miles (805 km).
Do not make full-throttle starts.
Avoid making hard stops for the rst
200 miles (322 km) or so. During this time your
new brake linings are not yet broken in. Hard
stops with new linings can mean premature
wear and earlier replacement. Follow this
breaking-in guideline every time you get new
brake linings.
Do not tow a trailer during break-in. SeeTowing
a Trailer on page 4-40for more information.
2-15
ProCarManuals.com

Instrument Panel Overview...............................3-4
Hazard Warning Flashers................................3-6
Other Warning Devices...................................3-6
Horn.............................................................3-6
Tilt Wheel.....................................................3-6
Turn Signal/Multifunction Lever.........................3-7
Turn and Lane-Change Signals........................3-7
Headlamp High/Low-Beam Changer..................3-8
Flash-to-Pass.................................................3-8
Windshield Washer.........................................3-8
Windshield Wiper Lever...................................3-9
Cruise Control..............................................3-10
Headlamps..................................................3-13
Daytime Running Lamps (DRL).......................3-13
Automatic Headlamp System..........................3-14
Fog Lamps..................................................3-15
Instrument Panel Brightness...........................3-15
Dome Lamp.................................................3-16
Entry Lighting...............................................3-16
Map Lamps.................................................3-16
Battery Run-Down Protection..........................3-16
Accessory Power Outlets...............................3-16
Ashtrays and Cigarette Lighter........................3-17Climate Controls............................................3-18
Climate Control System.................................3-18
Outlet Adjustment.........................................3-20
Passenger Compartment Air Filter...................3-21
Warning Lights, Gages, and Indicators............3-22
Instrument Panel Cluster................................3-23
Speedometer and Odometer...........................3-24
Trip Odometer..............................................3-24
Tachometer.................................................3-25
Safety Belt Reminder Light.............................3-25
Airbag Readiness Light..................................3-26
Battery Warning Light....................................3-27
Brake System Warning Light..........................3-27
Anti-Lock Brake System Warning Light.............3-28
Traction Control System (TCS) Warning Light . . .3-29
Engine Coolant Temperature Warning Light......3-29
Engine Coolant Temperature Gage..................3-30
Low Coolant Warning Light............................3-30
Malfunction Indicator Lamp.............................3-31
Oil Pressure Light.........................................3-33
Change Engine Oil Light................................3-34
Security Light...............................................3-34
Section 3 Instrument Panel
3-1
ProCarManuals.com

The oil light may also come on when the ignition is on
but the engine is not running, the light will come on as a
test to show you it is working, but the light will go out
when you turn the ignition to START. If it doesn’t come
on with the ignition on, you may have a problem with
the fuse or bulb. Have it fixed right away.
{CAUTION:
Do not keep driving if the oil pressure is low.
If you do, your engine can become so hot that
it catches re. You or others could be burned.
Check your oil as soon as possible and have
your vehicle serviced.
Notice:Lack of proper engine oil maintenance
may damage the engine. The repairs would not
be covered by your warranty. Always follow
the maintenance schedule in this manual for
changing engine oil.
Change Engine Oil Light
If this light comes on and
stays on, it means that
service is required for
your vehicle.
SeeScheduled Maintenance on page 6-4and/orEngine
Oil on page 5-13for more information.
Security Light
Your vehicle is equipped
with a Passlock®
theft-deterrent system.
With this system, the
security light will flash
as you open the door if
your ignition is off.
For more information, seePasslock
®on page 2-14.
3-34
ProCarManuals.com

The theft deterrent feature is designed to discourage
theft of your vehicle’s radio. It works by using a secret
code to disable all radio functions whenever battery
power is interrupted.
The theft deterrent feature for the radio may be used or
ignored. If ignored, the radio plays normally and the
radio is not protected by the feature. If the theft deterrent
feature is activated, the radio will not operate if stolen.
When the theft deterrent feature is activated, LOCK will
appear on the radio display to indicate a locked condition
anytime battery power has been interrupted. If the battery
loses power for any reason, you must unlock the radio
with the secret code before it will operate.
Activating the Theft-Deterrent Feature
The instructions which follow explain how to enter your
secret code to activate the theft deterrent feature.
Read through all 10 steps before starting the procedure.
If you allow more than 15 seconds to elapse between
any steps, the radio automatically reverts to time
and you must start the procedure over at Step 4.
1. Write down any four-digit number from
0000 to 9999 and keep it in a safe place
separate from the vehicle.
2. Turn the ignition to RUN.3. Turn the radio off.
4. Press the 5 and 6 pushbuttons at the same time for
five seconds. -- -- -- -- will appear on the display.
Next you will use the secret code number which you
have written down.
5. Press the SEEK/SCAN up arrow to make the first
digit agree with your code.
6. Press the SEEK/SCAN down arrow to make the
second digit agree with your code.
7. Press the TUNE up arrow to make the third digit
agree with your code.
8. Press the TUNE down arrow to make the fourth
digit agree with your code.
9. Press AM-FM after you have confirmed that the
code matches the secret code you have written
down. REP will appear on the display to indicate
that Steps 5 through 8 need to be repeated to
confirm your secret code.
10. Press AM-FM again. SEC will appear on the display
to indicate that the radio is secure.
If SEC is not displayed, but displays Err1, Err2, or
LOCK, the theft deterrent feature is already set
to another code. See “Disabling the Theft-Deterrent
Feature” later in this section.
3-59
ProCarManuals.com

Unlocking the Theft-Deterrent Feature
After a Power Loss
Enter your secret code as follows; pause no more than
15 seconds between steps:
1. Turn the ignition on. -- -- -- -- will appear on the
display.
2. Preform Steps 5 through 8 from the “Activating
the Theft-Deterrent Feature” earlier to enter your
secret code.
3. Press AM-FM after you have confirmed that the
code matches the secret code you have written
down. SEC will appear on the display, indicating the
radio is now operable and secure.
If you enter the wrong code, the display will momentarily
show an error message and all radio functions will
continue to be disabled. If -- -- -- -- appears on
the display, you can try to enter your secret code again.
If you enter the wrong code three times, LOCK will
appear on the display. Contact your Saturn retailer.
Your Saturn retailer is authorized to obtain the factory
programmed code that is assigned to the radio to
reset the system.
If you forget your code, if the theft deterrent feature
is accidentally activated with an unknown code, or if
the radio is in the locked mode, contact your Saturn
retailer.
Disabling the Theft-Deterrent Feature
Enter your secret code as follows; pause no more than
15 seconds between steps:
Preform Steps 1 through 9 from the “Activating the
Theft-Deterrent Feature” earlier to enter your secret
code. OFF will appear on the display indicating the
theft deterrent feature is off.
If OFF does not appear on the display, the wrong
code was entered. If you enter the wrong code,
the display will momentarily show an error message
and all radio functions will continue to be disabled.
If -- -- -- -- appears on the display, you can try to enter
your secret code again.
If you enter the wrong code three times, LOCK will
appear on the display. Contact your Saturn retailer.
Your Saturn retailer is authorized to obtain the factory
programmed code that is assigned to the radio to
reset the system.
If you forget your code, if the theft deterrent feature
is accidentally activated with an unknown code, or if
the radio is in the locked mode, contact your Saturn
retailer.
3-60
ProCarManuals.com

Winter Driving
Here are some tips for winter driving:
•Have your vehicle in good shape for winter.
•You may want to put winter emergency supplies
in your trunk.
Also seeTires on page 5-48.Include an ice scraper, a small brush or broom, a supply
of windshield washer fluid, a rag, some winter outer
clothing, a small shovel, a flashlight, a red cloth, and a
couple of reflective warning triangles. And, if you will be
driving under severe conditions, include a small bag of
sand, a piece of old carpet, or a couple of burlap bags to
help provide traction. Be sure you properly secure these
items in your vehicle.
4-26
ProCarManuals.com

Never exceed the GVWR for your vehicle or the Gross
Axle Weight Rating (GAWR) for either the front or
rear axle.
If the vehicle is going to carry a heavy load, spread
it out. Do not carry more than 167 lbs (75 kg)
in your trunk.
{CAUTION:
Do not load your vehicle any heavier than the
Gross Vehicle Weight Rating (GVWR), or either
the maximum front or rear Gross Axle Weight
Rating (GAWR). If you do, parts on your
vehicle can break, and it can change the way
your vehicle handles. These could cause you
to lose control and crash. Also, overloading
can shorten the life of your vehicle.
Notice:Overloading your vehicle may cause
damage. Repairs would not be covered by your
warranty. Do not overload your vehicle.If things like suitcases, tools, packages, or anything else
are put inside the vehicle, they will go as fast as the
vehicle goes. If you have to stop or turn quickly,
or if there is a crash, they will keep going.
{CAUTION:
Things you put inside your vehicle can strike
and injure people in a sudden stop or turn, or
in a crash.
Put things in the trunk of your vehicle. In a
trunk, put them as far forward as you can.
Try to spread the weight evenly.
Never stack heavier things, like suitcases,
inside the vehicle so that some of them
are above the tops of the seats.
Do not leave an unsecured child restraint
in your vehicle.
When you carry something inside the
vehicle, secure it whenever you can.
Do not leave a seat folded down unless
you need to.
4-36
ProCarManuals.com

Hitches
It’s important to have the correct hitch equipment.
Crosswinds, large trucks going by and rough roads are
a few reasons why you will need the right hitch. Here
are some rules to follow:
•The rear bumper on your vehicle is not intended for
hitches. Do not attach rental hitches or other
bumper-type hitches to it. Use only a frame-mounted
hitch that does not attach to the bumper.
•Will you have to make any holes in the body of your
vehicle when you install a trailer hitch? If you do, then
be sure to seal the holes later when you remove the
hitch. If you don’t seal them, deadly carbon
monoxide (CO) from your exhaust can get into your
vehicle. SeeEngine Exhaust on page 2-25. Dirt and
water can, too.
Safety Chains
You should always attach chains between your vehicle
and your trailer. Cross the safety chains under the tongue
of the trailer so that the tongue will not drop to the road if
it becomes separated from the hitch. Instructions about
safety chains may be provided by the hitch manufacturer
or by the trailer manufacturer. Follow the manufacturer’s
recommendation for attaching safety chains and do not
attach them to the bumper. Always leave just enough
slack so you can turn with your rig. And, never allow
safety chains to drag on the ground.
Trailer Brakes
Because your vehicle has anti-lock brakes, do not try to
tap into your vehicle’s hydraulic brake system. If you
do, both brake systems will not work well, or at all.
Be sure to read and follow the instructions for the trailer
brakes so you’ll be able to install, adjust and maintain
them properly.
Driving with a Trailer
Towing a trailer requires a certain amount of experience.
Before setting out for the open road, you will want to
get to know your rig. Acquaint yourself with the feel of
handling and braking with the added weight of the trailer.
And always keep in mind that the vehicle you are
driving is now a good deal longer and not nearly as
responsive as your vehicle is by itself.
Before you start, check the trailer hitch and platform
(and attachments), safety chains, electrical connector,
lamps, tires and mirror adjustment. If the trailer has
electric brakes, start your vehicle and trailer moving and
then apply the trailer brake controller by hand to be
sure the brakes are working. This lets you check your
electrical connection at the same time.
During your trip, check occasionally to be sure that the
load is secure, and that the lamps and any trailer
brakes are still working.
4-43
ProCarManuals.com