2023 Volvo XC90 Recharge Plug-in Hybrid Engine compartment
Topping up washer fluid
Washer fluid is used for cleaning the headlamps as well as the windscreen and rear window. Washer fluid with antifreeze must be used when the temperature is under the freezing point.
When approx. 1 litre (1 qt) of washer fluid remains in the reservoir, the message Refill washer fluid, level low appears together with the
symbol in the driver display.When the Refill washer fluid, level low message together with the symbol appear in the driver display, it is time to refill the washer fluid
- Open the bonnet with the handle in the passenger compartment and then with the handle under the front edge of the bonnet.
- Open the washer fluid reservoir cap.
Washer fluid is filled into the reservoir with the blue cap. The reservoir is used for windscreen washers, rear window washers and headlamp washers. - Top up with washer fluid.
- Close the washer fluid reservoir cap and then close the bonnet.
Prescribed grade
Washer fluid recommended by Volvo – with frost protection during cold weather and for temperatures below freezing point.
Volume:
- Cars with headlamp washing: 5.5 litres (5.8 qts).
- Cars without headlamp washing: 3.5 litres (3.7 qts).
Brake fluid – specifications
Brake fluid is the medium in a hydraulic brake system that is used to transfer pressure from e.g. a brake pedal via a master brake cylinder, which in turn acts on the brake callipers.
Prescribed grade: Volvo Original or equivalent fluid compliant with a combination of Dot 4, 5.1 and ISO 4925 class 6.
Opening and closing the bonnet
The bonnet can be opened using the handle in the passenger compartment and a handle under the front edge of the bonnet. It is important to follow the instructions for closing and to check that the bonnet is fully closed if it has been open.
| Pull the handle beside the pedals to release the bonnet from its fully closed position. |
| Turn the handle under the bonnet anticlockwise to release the catch and lift the bonnet. |
Open bonnet is indicated by a warning symbol and graphic in the driver display as well as by an acoustic signal.
Close the bonnet
Make sure that nothing is in the way of the bonnet closing to avoid crushing damage.
- Lower the bonnet until it reaches the bonnet lock catch.
- Press down on the bonnet with both hands in order to fully close it.
The bonnet must be audibly locked on both sides. - Check that the bonnet has been properly locked and that it is not open slightly.
- Never drive with an open bonnet.
- Thoroughly check that the bonnet is fully closed after it has been open.
- If the car warns or indicates that the bonnet is open, or if something else suggests that it is not fully closed – stop immediately and close it firmly.
Engine compartment overview
The engine compartment contains several service-related parts.
Some of the components included in the car’s electric drive system are located under the bonnet. Exercise caution in this area and only touch anything that is related to normal maintenance.
- Do not touch anything that is not clearly described in the owner’s manual.
- Exercise caution when checking/refilling fluids in the engine compartment.
The appearance of the engine compartment may differ depending on the model and engine variant.
- Coolant expansion tank
- Reservoir for brake fluid (located on the driver’s side)
- Washer fluid filler pipe
- Central electrical unit
- Air filter
- Engine oil filler pipe
Location of warning decal for the engine compartment. The appearance of the engine compartment may differ depending on model and engine variant.
Always have the engine cleaned by a workshop – an authorised Volvo workshop is recommended. There is a risk of fire if the engine is hot.
- The ignition system works at a very high and hazardous voltage. The car’s electrical system must always be in ignition position 0 when work is being performed in the engine compartment.
- Do not touch the spark plugs or ignition coil when the car’s electrical system is in ignition position II or when the engine is hot.
Coolant
The coolant cools the internal combustion engine to the correct operating temperature. The surplus heat can be used to heat the passenger compartment.
Prescribed grade:
- Ready-mixed coolant approved by Volvo.
- If the concentrated coolant is used, mix it with 50% pure water. The level of cleanliness must meet Volvo’s requirements. Consult a Volvo dealer if unsure.
- In order to prevent deterioration of cooling system function, which may lead to engine malfunction among other things, it is recommended that only coolant approved by Volvo should be used.
Topping up coolant
Follow the instructions on the coolant’s packaging for topping up. Never top up with water only. The risk of freezing increases with both too little and too much coolant concentrate.
If there are signs of leakage from the cooling system – avoid starting the car and have it towed in order not to risk engine damage. Signs of leakage may be coolant under the car, that coolant visibly evaporates, or that more than 2 litres (approx. 2 quarts) is needed for topping up.
The coolant can be very hot when the engine has been running. Always allow the coolant to cool down before unscrewing the filler cap.When filling – carefully unscrew the cap to release any overpressure.
Coolant expansion tank
Lift off the rubber strip by pressing it inward in the engine compartment.
Detach the flap in the plastic cover by folding out the release catch and turning the flap upward.
Screw off the cap and top up with coolant if necessary. The coolant level must lie between the MIN and MAX marks on the expansion tank.
Reinstall the parts in reverse order.
- Coolant is harmful to ingest and may cause organ damage.
- Only use coolant of Volvo-approved quality. If the concentrated liquid is used, make sure that the ratio is 50 % coolant to 50 % water of approved quality.
- Hard water and water with a high content of chlorine, chlorides and other salts or contaminants may cause corrosion to the cooling system.
- Do not mix different coolants.
- New coolant must be used to replace all coolant when replacing a large component in the cooling system.
- Only operate the engine when the cooling system is filled to the correct level. When the coolant level is too low, it may lead to overheating, resulting in engine damage.
Engine oil
Only use engine oil of the prescribed quality. This is a requirement in order for the recommended service intervals and warranty to be applicable.
Location of warning decal for the engine compartment. The appearance of the engine compartment may differ depending on model and engine variant.
Volvo recommends
If the engine oil cannot be checked on a regular basis and the level falls too low, there is a risk that this will cause serious damage to the engine.
- In order to fulfil the requirements for the engine’s service intervals, all engines are filled with specially adapted synthetic engine oil at the factory. The choice of oil has been made very carefully with regard to service life, starting characteristics, fuel consumption and environmental impact.
- Approved engine oil must be used in order that the recommended service intervals can be applied. Only use a prescribed grade of oil for both filling and oil change, otherwise, there is a risk of the service life, starting characteristics, fuel consumption and environmental impact of the car is affected.
- If engine oil of the prescribed grade and viscosity is not used, engine-related components may become damaged. Volvo disclaims any liability for any such damage.
- Volvo recommends that oil changes are carried out at an authorised Volvo workshop.
- Volvo uses different systems to warn about the oil level or low oil pressure. Low oil pressure is indicated by a warning symbol
in the driver display. Warning or information about the car’s oil level can be indicated by a warning symbol in the driver display as well as message texts. Contact a Volvo dealer for more information. - Change the engine oil and oil filter in accordance with the intervals specified in the Service and Warranty Booklet.
Checking and filling with engine oil
The oil level is detected with the electronic oil level sensor.
- Press
in the centre display. - Select Car status.
- Different types of information about the car can be shown, including oil levels.
If this symbol is shown then the oil pressure may be too low. Stop the car as quickly as possible and have the car recovered to a workshop – an authorised Volvo workshop is recommended.
Filler pipe,.
In some cases, oil may need to be topped up between service intervals. No action with regard to engine oil level needs to be taken until a message is shown in the driver display.
Engine oil – specifications
Engine oil grade and volume for each respective engine alternative can be read in the table.
Volvo recommends:
| Engine | Engine code | Volume, incl. oil filter
(litres, approx.) |
Oil grade |
|---|---|---|---|
| T8 AWD | B4204T53 | 5,6 | Castrol Edge Professional V 0W-20 or VCC RBS0-2AE 0W-20 |
| T8 AWD | B4204T56 | 5,6 | |
| T8 AWD | B4204T57 | 5,6 |
Fuses in engine compartment
Among other things, the engine compartment fuses protect functions related to the engine and the brake system.
Special pliers are housed on the inside of the cover to facilitate replacement of tripped fuses.
The fuse box also provides space for several spare fuses.
- Fuse locations are shown on the inside of the cover. Functions and components in the fuse table cover several models and engine alternatives. A fuse description can therefore apply to fewer than those in the table, or be completely missing, depending on how the car is equipped.
- If a position has multiple table values, it is due to variations in equipment level. In which case, follow the value of the fuse being replaced. In the event of doubt – contact a workshop. An authorised Volvo workshop is recommended.
| Function | Ampere | Type | |
|---|---|---|---|
| – | – | Micro | |
| – | – | Micro | |
| – | – | Micro | |
| Control module, transmission actuator | 5 | Micro | |
| Control module, coolant heating | 5 | Micro | |
| Air conditioning | 5 | Micro | |
| Control module, hybrid battery
High voltage converter, high-voltage generator/starter motor |
5 | Micro | |
| – | – | Micro | |
| – | – | Micro | |
| Control module, hybrid battery
High voltage converter, high-voltage generator/starter motor |
10 | Micro | |
| Charging unit | 5 | Micro | |
| Shut-off valve, hybrid battery cooling
Coolant pump, hybrid battery |
15 | Micro | |
| Coolant pump, electric drive system | 15 | Micro | |
| Cooing fan, hybrid components | 25 | MCase | |
| – | – | MCase | |
| – | – | MCase | |
| – | – | MCase | |
| Calculation unit | 5 | Micro | |
| – | – | Micro | |
| – | – | Micro | |
| – | – | Micro | |
| – | – | Micro | |
| USB port, tunnel console, rear | 7,5 | Micro | |
| 12 V socket, tunnel console, front | 15 | Micro | |
| – | – | Micro | |
| 12 V socket cargo area | 15 | Micro | |
| Spare fuse | 5 | Micro | |
| Headlamp, left | 15 | Micro | |
| Headlamp, right | 15 | Micro | |
| Spare fuse | 10 | Micro | |
| Heated windscreen, left | Shunt | MCase | |
| Heated windscreen, left | 40 | MCase | |
| Headlamp washers | 25 | MCase | |
| Windscreen washers | 25 | MCase | |
| – | – | Micro | |
| Horn (honk) | 20 | Micro | |
| Siren | 5 | Micro | |
| Control module, brake system (valves, parking brake) | 30 | MCase | |
| Windscreen wipers | 30 | MCase | |
| Rear window washer | 25 | MCase | |
| Heated windscreen right-hand side | 40 | MCase | |
| Parking heater | 20 | MCase | |
| – | – | MCase | |
| – | – | MCase | |
| Heated windscreen, right | Shunt | MCase | |
| Supplied when the ignition is switched on: Engine control module, Transmission components, Electric steering servo, Central electronic module | 5 | Micro | |
| Exterior car noise (certain markets) | 5 | Micro | |
| Headlamp, right | 15 | Micro | |
| Alcohol lock
– |
5
– |
Micro | |
| – | – | Micro | |
| Radar, front | 5 | Micro | |
| Collision module (SRS)
|
5 | Micro | |
| Headlamp, left | 15 | Micro | |
| Accelerator pedal sensor | 5 | Micro | |
| Transmission control module
Control module, gear selector |
15 | Micro | |
| Engine Control Module (ECM) | 5 | Micro | |
| – | – | Micro | |
| – | – | Micro | |
| – | – | Micro | |
| – | – | Micro | |
| Engine Control Module (ECM)
Throttle control module Actuator, switch, compressor |
20 | Micro | |
| Engine component group 1 (components related to engine function, including turbo/compressor. Contents depend on engine alternative.) | 10 | Micro | |
| Engine component group 2 (components related to engine function, including turbo. Contents depend on engine alternative.)
Switching valve, air conditioning |
7,5 | Micro | |
| Control module, spoiler damper
Control module, radiator damper |
5 | Micro | |
| – | – | Micro | |
| Lambda probe | 15 | Micro | |
| Solenoid engine oil pump
Lambda probes Solenoid air conditioning compressor |
15 | Micro | |
| – | – | Micro | |
| Engine Control Module (ECM) | 20 | Micro | |
| Spark plugs/ignition coils | 15 | Micro | |
| – | – | MCase | |
| – | – | MCase | |
| Control module, transmission oil pump | 30 | MCase | |
| – | – | MCase | |
| Actuator, transmission | 25 | MCase | |
| – | – | MCase | |
| – | – | MCase | |
| – | – | MCase |