
1998 Volvo S90
are used properly. However, children 
could be endangered in a crash if the 
child restraints are not properly secured 
in the vehicle. Failure to follow the 
installation instructions for your child 
restraint can result in your child striking 
the vehicle's interior in a sudden stop. 
Holding a child in your arms is NOT a 
suitable substitute for a child restraint 
system. In an accident, a child held in a 
person's arms can be crushed between 
the vehicle's interior and an unrestrained 
person. The child could also be injured 
by striking the interior, or by being 
ejected from the vehicle during a sudden 
maneuver or impact. The same can also 
happen if the infant or child rides 
unrestrained on the seat. Other 
occupants should also be properly 
restrained to help reduce the chance of 
injuring or increasing the injury of a 
child. All states and provinces have 
legislation governing how and where 
children should be carried in a car. Find 
out the regulations existing in your state 
or province. l     Make sure the child restraint 
system is approved for the child's 
height, weight and development - 
the label required by the standard 
or regulation, or instructions for 
infant restraints, typically provide 
this information. 
l     In using any child restraint 
system, we urge you to look 
carefully over the instructions 
that are provided with the 
restraint. Be sure you 
understand them and can use 
the device properly and safely 
in this vehicle. A misused child 
restraint system can result in 
increased injuries for both the 
infant or child and other 
occupants in the vehicle. 
l     If your child restraint requires a 
top tether strap, consult your 
authorized Volvo retailer for top 
tether anchorage and installation 
information. 
is available for use in the luggage 
compartment of station wagon models. 
This seat is designed for two children, 
each weighing between 23 - 40 kg (50 - 
88 lbs.) and up to 150 cm (59 inches) in 
height.  
 WARNING!  
l     When using the auxiliary seat 
for children, both sections of 
the rear seat backrest must be 
secured in the upright position 
l     Do not use a booster cushion or 
child seat in conjunction with 
the auxiliary seat. 
Occupant Safety pg. 13
Seat belt maintenance 
 
Check periodically that the anchor bolts 
are secure and that the belts are in good 
condition. Use water and a mild 
detergent for cleaning. Check seat belt 
mechanism function as follows: Attach 
the seat belt and pull rapidly on the strap.
Volvo Concern for Safety  
 
Safety is the cornerstone for Volvo. Our 
concern dates back to 1927 when the 
first Volvo rolled off the production line. 
Three-point seat belts (a Volvo 
invention), safety cages, and energy-
absorbing impact zones were designed 
into Volvo cars long before it was 
fashionable or required by government 
regulation. We will not compromise our 
commitment to safety. We continue to 
seek out new safety features and to refine 
those already in our cars. You can help. 
We would appreciate hearing your 
suggestions about improving automobile 
Occupant safety  
 
How safely you drive doesn't depend on 
how old you are but rather on: 
l     how well you see 
l     your ability to concentrate 
l     how quickly you make decisions 
under stress to avoid an accident.  
The tips listed below are 
suggestions to help you cope with 
the ever changing traffic 
environment. 
l     Never drink and drive. 
l     If you are taking any medication, 
consult your physician about its 
potential effects on your driving 
abilities. 
l     Take a driver-retraining course 
l     Have your eyes checked regularly 
l     Keep your windshield and 
headlamps clean. 
l     Replace wiper blades when they 
start to leave streaks. 
l     Take into account the traffic, 
Reporting Safety Defects in 
the U.S. 
 
 
If you believe that your vehicle has a 
defect which could cause a crash or 
could cause injury or death, you 
should immediately inform the 
National Highway Traffic Safety 
Administration (NHTSA) in 
addition to notifying Volvo Cars of 
North America. If NHTSA receives 
similar complaints, it may open an 
investigation, and if it finds that a 
safety defect exists in a group of 
vehicles, it may order a recall and 
remedy campaign. However, 
NHTSA cannot become involved in 
individual problems between you, 
your retailer, or Volvo Cars of North 
America. To contact NHTSA, you 
may either call the Auto Safety 
Hotline toll-free at 1-800-424-9393 
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1998 Volvo S90
The warning lights described on pages 18 and 19 should never stay on whe\
n driving 
 
When the ignition key is turned on, and before the engine starts, all of\
 the warning lights should be on 
to test the function of the bulbs. Should a light not go off after the e\
ngine has started, the system 
indicated should be inspected. However, the parking brake reminder light\
 will not go off until the 
parking brake is fully released. 
 Generator warning 
light  
 
If the light comes on while the 
engine is running, have the 
charging system checked. 
 
 Malfunction 
indicator lamp  
 
If the lamp comes on (or stays 
on after the vehicle has started), 
the engine diagnostic system 
has detected a possible fault in 
the emission control system. 
Although driveability may not 
be affected, see an authorized 
Volvo retailer as soon as 
possible for inspection. 
 
NOTE:If the fuel filler cap is 
not closed tightly or if the 
engine is running when the car 
is refueled, the Malfunction 
Indicator Lamp may indicate a 
fault. Use only Volvo original 
or approved fuel filler caps. 
 Oil pressure warning 
light  
 
If the light comes on while 
driving, stop the car and then s 
If the light stays on after restart, 
have the car towed to the 
nearest authorized Volvo 
retailer. After hard driving, the 
light may come on occasionally 
when the engine is idling. This 
is normal, provided it goes off 
when the engine speed is 
increased. 
 
 Parking brake 
reminder light  
 
This light will be on when the 
parking brake (hand brake) is 
applied. The parking brake 
lever is situated between the 
front seats. Canadian models 
are equipped with this warning 
light: 
 
 Brake failure 
warning light  
 
If the light comes on while 
driving or braking, stop 
immediately, open the hood and 
check the brake fluid level in the 
reservoir. See page 114 for 
reservoir position.  
Canadian models are equipped 
with this warning light: 
  
 
WARNING!  
If the level is below the MIN 
mark in either section of the 
reservoir: DO NOT DRIVE. 
Tow the car to a Volvo 
retailer and have the brake 
system checked and any 
leakage repaired. 
Warning lights (cont.) pg. 19
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1998 Volvo S90
Headlights and parking lights 
 
 All lights off *  
 
 Parking lights on **  
 
 Headlights and parking lights are on if 
starting (ignition) switch is in position I or II. If 
the headlight switch is in position 
 all lights 
will go out when starting switch is switched off.  
With the headlight switch in position 
 the 
parking lights will stay on (headlights off) with 
the daytime running light switch (A) in position 
 .  
The high beams can only be switched on if the 
headlight switch is in position
 .  
Switch from high to low beams, and vice versa, 
by moving the turn signal switch lever on the left 
side of the steering column towards the steering 
wheel.  
*Models equipped with daytime running lights: 
The low beams, tail lights, parking lights and 
license plate lights will come on automatically 
when the ignition is switched on.  
Automatic daytime running lights  
NOTE: The daytime running light function may 
only be disabled (turned off) in the U.S. - 
Canadian law mandates the use of daytime 
running lights.  
Screw A in the illustration (available on U.S. 
models only) is used to control the automatic 
daytime running lights when the headlight switch 
is in position 0. To adjust, press in the screw with 
a small screwdriver and turn to one of the 
following positions:  
 Automatic daytime 
running lights  
 Automatic daytime 
running lights  
** The daytime running 
lights will also function when 
the headlight switch is in 
 
 
Turn signals 
 
1 Lane change position: In maneuvers such as 
lane changing, the driver can flash the turn signals 
by moving the turn signal lever to the first stop 
and holding it there. The lever will return to the 
neutral position when released.  
2 Signal lever engaged for normal turns  
3 High beam/low beam switch (headlights on)  
Move the lever towards the steering wheel and 
release it.  
Headlight flasher (headlights off)  
Move the lever towards the steering wheel.  
The headlight high beam will be on until the lever 
is released.  
 
NOTE:Defective turn signal bulbs will cause turn 
signal indicator and remaining signal lights to 
flash more rapidly than normal. 
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1998 Volvo S90
the above illustration.  
The starting (ignition) switches must be ON 
(position II) for the electrically operated windows 
to function. The window is lowered if the rear part 
of the switch is pressed and raised if the front part 
of the switch is pressed.  
NOTE: Driver's window only (AUTO): The 
window can be opened completely by pressing the 
rear part of the switch lightly and releasing it 
immediately. The window can be stopped by 
pressing the button again. If the button is held 
down, the window will be lowered until the button 
is released. 
 WARNING!Remove the starting (ignition) 
key when children are left unattended in the 
vehicle.  
Make sure that children's hands are clear 
before raising the windows. is positioned 90° in relation to the other switches.  
ON The rear door windows can be raised or 
lowered with the respective door switch as well as 
the switch on the driver's door.  
OFF The rear door windows cannot be raised or 
lowered with the respective door switch but 
instead only with the corresponding switch on the 
driver's door. 
 
NOTE: The power window motors have an 
overload protecting circuit breaker which is 
activated when an object blocks a window. 
Should this occur, remove the object and wait 20 
seconds for the circuit breaker to reset. The power 
windows should then function. 
Parking brake, Cigarette lighter, Ashtrays pg. 30 
 
 
Parking brake (hand brake) 
 
The lever is situated between 
the front seats. The brake is 
applied to the rear wheels.  
  
 
Cigarette lighter/ashtrays 
 
To operate, depress the knob 
fully. When the knob 
automatically releases, the 
cigarette lighter is ready for use.  
The starting (ignition) switch 
must be switched on (to position 
I or II) for the cigarette lighter 
to function.  
 
"OBD II" 
 
A connector for on-board 
diagnostics ("OBD II") is located 
to the right of the parking brake. 
This connector is intended for 
use by authorized service 
technicians only. 
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1998 Volvo S90
Volvo allows the use of the 
following "oxygenated fuels"; 
however, the octane ratings 
listed on this page must still be 
met. of fuel. Therefore, it is 
advisable to refuel as soon as 
possible when the needle nears 
the red zone, or when the fuel 
warning light comes on. 
Driving economy pg. 56 
Economical driving 
conserves natural 
resources 
 
Better driving economy may be 
obtained by thinking ahead, 
avoiding rapid starts and stops 
and adjusting the speed of your 
vehicle to immediate traffic 
conditions. Observe the 
following rules:  
 
l     Bring the engine to normal 
operating temperature as soon 
as possible by driving with a 
light foot on the accelerator 
pedal for the first few minutes 
of operation. A cold engine 
uses more fuel and is subject to 
increased wear.  
 
l     Whenever possible, avoid 
using the car for driving short 
distances. This does not allow 
the engine to reach normal 
operating temperature.  
 
l     Drive carefully and avoid 
rapid acceleration and hard 
braking.  
 
l     Do not exceed speed limit.  
 
l     Avoid carrying unnecessary 
items (extra load) in the car.  
 
l     Check tire pressure regularly 
l     Remove snow tires when 
threat of snow or ice has ended.  
 
l     Note that roof racks, ski 
racks, etc., increase air 
resistance and thereby fuel 
consumption.  
 
l     Avoid using automatic 
transmission kick-down feature 
unless necessary.  
 
l     Avoid using the air 
conditioning when it is not 
required. When engaged, the 
air conditioner's compressor 
places places an additional load 
on the engine. However, please 
note that fuel consumption is 
lower with the air conditioning 
on than it is when driving with 
the air conditioning switched 
off and the windows down.  
 
Other factors which decrease 
gas mileage are:  
l     Worn or dirty spark plugs  
l     Incorrect spark plug gap  
l     Dirty air cleaner  
l     Dirty engine oil and clogged 
oil filter  
l     Dragging brakes  
l     Incorrect front end alignment
 
Some of the above mentioned 
 
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1998 Volvo S90
(check when tires are cold). items and others are checked at 
the standard Maintenance 
Service intervals. 
 
NOTE: Since using (D)rive 
improves fuel economy, it 
should be used as often as 
possible. 
Starting the engine pg. 57 
Starting and stopping a 
car equipped with 
automatic transmission 
 
1 Fasten the seat belt. 
  WARNING! Before 
starting, check that the seat 
is adjusted properly. Make 
sure the brake pedal can be 
depressed completely. Move 
the seat closer if necessary. 
Refer to section "Front 
seats". 
 
2 Apply the parking brake, if 
not already set. The gear 
selector is locked in the (P)ark 
position (SHIFTLOCK). 
 
3Without touching the 
accelerator pedal ,turn the 
ignition key to the starting 
position. Allow the starter to 
operate for 5-10 seconds. 
Release the key as soon as the 
engine starts. If the engine fails 
to start, repeat step 3.  
 
5 Select desired gear. The gear 
engages after a slight delay, 
especially noticeable when 
selecting R. 
  CAUTION: Engine should 
be idling; never accelerate 
until after you feel the gear 
engage! Too rapid 
acceleration immediately 
after selecting a gear will 
cause harsh engagement and 
premature transmission 
wear. 
 
NOTE:Your car is equipped 
with a KEYLOCK system. 
When the engine is switched 
off, the gear selector must be in 
the (P)ark position before the 
key can be removed from the 
ignition switch. 
  
Engine warm-up - initial 
driving procedure 
 
Engines in vehicles driven short 
distances are subject to 
abnormally rapid wear because 
the engine never reaches normal 
operating temperature. It is 
therefore beneficial to reach 
normal operating temperature as 
soon as possible. This is best 
achieved by driving with a light 
foot on the accelerator pedal for 
a few minutes after starting, 
rather than prolonged idling.  
 
B6304 S Engine 
 
 
This engine features hydraulic 
valve lifters which means that 
valve clearance is adjusted 
automatically. It is possible that 
the valve lifters will produce a 
ticking sound for the first few 
seconds after the engine is 
started, while the oil pressure is 
increasing.  
If the car has not been used for a 
long period of time, this ticking 
sound may last for up to 15 
minutes. This is entirely normal. 
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1998 Volvo S90
Chapter 4 (cont)
Brake system 
pg. 67 
  
 
If one of the brake 
circuits should 
malfunction, the red 
warning light will come 
on 
 
 
The pedal stroke increases 
slightly, the pedal feels softer 
and extra pressure is required for 
normal braking.  
If the light comes on while 
driving or braking, stop 
immediately and check the brake 
fluid level in the reservoir.  
 
WARNING!  
If the fluid level is below the 
MIN mark in either section 
of the reservoir: DO NOT 
DRIVE. Tow the car to a 
Volvo retailer and have the 
brake system checked and 
repaired. 
 
 
  
 
Anti-lock Brake System 
– ABS 
 
 
If the warning lamp lights up 
there is a malfunction of the 
ABS system (the standard 
braking system will however 
 
The system performs a self-
diagnostic test when the vehicle 
is started and at 4 mph (6 km/h). 
The driver may detect one 
pulsation of the brake pedal, 
which is normal.  
To obtain optimal effect from 
the ABS system, constant 
pressure should be kept on the 
brake pedal while the system 
is modulating the brakes. Do 
not pump the brake pedal.  
The switching of the ABS 
modulator will be audible at this 
time.  
Please be aware that ABS does 
not increase the absolute braking 
potential of the vehicle.  
While control will be enhanced, 
ABS will not shorten stopping 
distances on slippery surfaces.  
 
Moisture on brake 
discs and brake pads 
affects braking.
 
 
Driving in rain and slush or 
passing through an automatic car 
wash can cause water to collect 
on the brake discs and pads. 
This will cause a delay in 
braking effect when the pedal is 
depressed. To avoid such a delay 
when the brakes are needed, 
depress the pedal occasionally 
when driving through rain, slush 
etc. This will remove the water 
from the brakes. Check that 
Severe strain on the 
brake system 
 
 
The brakes will be subject to 
severe strain when driving in 
mountains or hilly areas or 
towing. The speed is usually low 
which means that the cooling of 
the brakes is less efficient than 
when driving on level roads. To 
reduce the strain on the brakes it 
is advisable not to use the brakes 
excessively. Instead, shift into a 
lower gear, position 3 or in some 
cases L ,and let the engine help 
with the braking.  
Do not forget that, if you are 
towing a trailer, the brakes will 
be subjected to greater load than 
is normal.  
 
If the brake power-
assist does not 
function 
 
 
The power assist to the brakes 
functions only when the engine 
is running. When the car is 
moving without the engine 
running the brake pedal pressure 
required to stop the car is 
increased by 3-4 times.  
The brake pedal feels stiff and 
hard. 
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1998 Volvo S90
function) and the vehicle should 
be driven to a Volvo retailer for 
inspection.  
The Anti-lock Braking System 
(ABS) helps to improve vehicle 
control (stopping and steering) 
during severe braking conditions 
by limiting brake lock-up. When 
the system "senses" impending 
lock-up, braking pressure is 
automatically modulated in 
order to help prevent lockup, 
which could lead to a skid. brake application feels normal. 
This should also be done after 
washing or starting in very damp 
or cold weather.
Trailer towing pg. 68 
When preparing for 
trailer towing, observe 
the following:
 
 
l     Volvo recommends the use of 
Volvo trailer hitches which are 
specially designed for the car. 
For trailer weights exceeding 
2000 lbs. (908 kg), use only a 
trailer hitch offered as a 
Genuine Volvo accessory.  
NOTE: Models with automatic 
transmission are equipped with 
a transmission oil cooler as 
standard equipment. This cooler 
helps prevent overheating of the 
transmission during times of 
increased load, as when towing 
a trailer.  
l     Maximum trailer weight 
recommended by Volvo is:  
Trailers without brakes: 1100 
lbs (500kg)  
Trailers with brakes: 2" ball - 
3300 lbs (1500 kg), 1 7/8" ball - 
2000 lbs (908 kg).  
WARNING! Never connect a 
trailer's hydraulic brake 
system directly to the vehicle 
brake system, nor a trailer's 
lighting system directly to the 
vehicle lighting system. 
Consult your nearest 
authorized Volvo retailer for 
correct installation. 
 
 
All Volvo models are equipped 
with energy-absorbing shock-
mounted bumpers. Trailer hitch 
installation should not interfere 
with the proper operation of this 
bumper system. Trailer towing 
does not normally present any 
particular problems, but take 
into consideration:  
l     Recommended hitch tongue 
load is 110 lbs (50 kgs) for 
trailer weights below 2,650 lbs 
(1,200 kgs) and 165 lbs (75 kgs) 
for trailer weights above 2,650 
lbs (1,200 kgs).  
l     For trailer weights between 
2,650-3,300 lbs (1,200-1,500 
 
l     Avoid overload and other 
abusive operation.  
l     Hauling a trailer affects 
handling, durability, and 
economy.  
l     It is necessary to balance 
trailer brakes with the towing 
vehicle brakes to provide a safe 
stop (check and observe State/
Local regulations).  
l     Do not connect the trailer's 
brake system directly to the 
vehicle's brake system.  
l     More frequent vehicle 
maintenance is required.  
l     Remove the ball and drawbar 
assembly when the hitch is not 
being used.  
l     Volvo recommends the use of 
synthetic engine oil when towing 
a trailer over long distances or in 
mountainous areas.  
l     The trailer hitch tongue load 
(110/165 lbs - 50/75 kg) is part 
of the vehicle's capacity weight. 
It may be necessary to reduce the 
trunk/cargo area load when 
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