Description Of Parameters

STEERING WHEEL MODULE (SWM) 

CRUISE CONTROL, RESUME PREVIOUS SELECTED SPEED 

Reading off if the central electronic module (CEM) interprets the switch as being activated or not activated.

CRUISE CONTROL, DECREASED SPEED 

Reading off if the central electronic module (CEM) interprets the switch as being activated or not activated.

CRUISE CONTROL, INCREASED SPEED 

Reading off if the central electronic module (CEM) interprets the switch as being activated or not activated.

CRUISE CONTROL, ROCKER SWITCH 

Reading off if the central electronic module (CEM) interprets the switch as being activated or not activated.

RAIN SENSOR SWITCH 

Reading off if the central electronic module (CEM) interprets the switch as being activated or not activated.

IMMOBILIZER 

STEERING WHEEL LOCK, POWER SUPPLY 

Indicates if the power supply to the steering wheel lock is on or off.

The power supply is only active during the locking cycle (approximately 1 second). 

SIGNALS FROM START CONTROL MODULE (SCU) TO CENTRAL ELECTRONIC MODULE (CEM) (NOT S60 (11-), V60 OR XC60 WITH STRUCTURE WEEK AFTER 1045, OR V70 (08-), XC70 (08-), S80 (07-), S80L FROM MODEL YEAR 2012). 

Indicates the signals transmitted via LIN from the start control module (SCU) to the central electronic module (CEM).

The values that may be shown are:

• Switch 1 by start button (LIN signal). Not activated or activated.
• Switch 2 by start button (LIN signal). Not activated or activated.
• Switch 1 by start button, directly connected, Not activated or activated (shows status of the directly connected signal from switch 1 by start button)
• Contact breaker for indicating key in ignition switch. Not activated or activated
• Contact breaker for activating key ejection. Not activated or activated

  Contact breaker activated only when the key is docked and pressed in at removal. 

• Locking key. Not activated or activated.

SIGNALS FROM IMMOBILIZER ANTENNA UNIT (IAU) TO CENTRAL ELECTRONIC MODULE (CEM) (ONLY S60 (11-), V60 AND XC60 WITH STRUCTURE WEEK AFTER 1045, OR V70 (08-), XC70 (08-), S80 (07-), S80L FROM MODEL YEAR 2012). 

Shows the directly connected signals from the start button's two switches to the Central electronic module (CEM).

The values that are shown are: 

• Switch 1 at start button, directly connected, not activated or activated.
• Switch 2 at start button, directly connected, not activated or activated.

POWER SUPPLY MODE 

Shows present current supply mode. The current supply mode affects which functions and systems are active or are possible to activate.

The values that are shown are:

• Key removed

  This mode is reached 1 minute after the key has been removed from the ignition. The functions in the car that still are supplied with voltage are, e.g., alarm system and the system for keyless vehicle.

• Key recently removed

  This mode is reached directly after the key has been removed from the ignition, and lasts for 1 minute. Functions such as Key warning and communication services for, e.g., phone module are usable this extra minute.

• Key approved

  The key is in the ignition, position 0, and the key is approved according to the ID-list stored in the Central electronic module (CEM).

• Ignition off after accessory position

  Key in position 0 after it has been in position 1. Synchronization of activities related to internal work memories takes place.

• Accessory position

  Key in position 1. Infotainment functions and telematic functions are fully available until the units sense low voltage from the battery. Then they go to energy save mode.

• Accessory position after Ignition on

  Key in position 1 after the engine has been running. Normal accessory mode plus the functions that are related to the engine being shut off.

• Ignition on

  Key in position 2.

• Running

  Key in position 2 and engine running.

• Start attempts

  Key in position 3. Starter motor tries to start the engine.

ALCOLOCK, COUNTER BY-PASS (2008-) 

The alcolock has an internal counter that stores the number of times that the system has been by-passed. When the counter reaches the maximum value of 255, it will not reset automatically and will not increase with further by-passes. Resetting is performed via VIDA/vehicle communication.

ALCOLOCK, EVENTS (2008-) 

Five parameters that show the history of the five last text messages that have appeared in the combined instrument panel.

ALCOLOCK, START INHIBITOR EVENTS (2008-) 

Five parameters that show the five last results from the alcolock.

The values that are shown are:

• Start permitted.
• Start not permitted.

GLOBAL TIME EVENTS (2008-) 

Five parameters that show global time during the five last occasions that the alcolock was used.

CENTRAL LOCKING 

REMOTE CONTROL, MESSAGE 

Shows the value for the most recent command from the remote control.

The values that are shown are:

• Ignore.
• Unlocking.
• Locking.
• Approach lighting.
• Boot lid.
• Panic alarm.
• Double panic alarm.
• Double unlocking.
• Comfort unlocking.
• Comfort locking.
• Lock setting.
• VPC request.
• Car locating.
• Close electric boot lid.
• Start climate system.

REAR DOOR, DRIVER'S SIDE 

Indicates if the rear door on the driver's side is open or closed.

REAR DOOR, PASSENGER SIDE 

Indicates if the rear door on the passenger side is open or closed.

PRIVACY LOCKING 

Indicates if privacy locking is activated by locking the glove compartment.

BUTTON STATUS FOR TANK HATCH 

Indicates if the switch for opening the tank hatch from the passenger compartment is activated or not activated.

OPENING SIGNAL BOOT LID/REAR DOOR FROM INTERNAL SWITCH 

Indicates if the switch for opening the boot lid/rear door from the passenger compartment is activated or not activated.

BOOT LID 

Indicates if the boot lid is open or closed.

Driver's door 

Indicates if the driver's door is open or closed.

Passenger door 

Indicates if the passenger door is open or closed.

Central locking switch in door panel front doors, function status 

Indicates if the central locking switch on the inside of the front doors is permitted to be used.

Boot lid opening switch in the boot lid handle 

Indicates if the switch in the boot lid handle is pressed in or not.

Tank hatch, unlocking 

Indicates the moment that the unlocking motor is activated.

Supply is only activated during locking or unlocking. 

Boot lid opening switch in the boot lid handle, function status 

Indicates if the boot lid opening switch in the boot lid handle is permitted to be used.

The boot lid position sensor locked (only V70 (08-) and XC70 (08-)) 

Indicates if the boot lid lock is locked (only V70 (08-) and XC70 (08-)).

Switch bonnet 

Indicates if the bonnet is open or closed.

Central locking, status 

Indicates the central locking status.

The values that are shown are:

• Unlocked.
• Locked.
• Double lock.
• Alarmed.

EXTERNAL LIGHTING 

STOP (BRAKE) LAMPS 

Reading off if the stop lamp is on or off.

HIGH LEVEL STOP LAMP 

Reading off if the high-level stop lamp is on or off.

BRAKE LAMP SWITCH 

Reading off if the stop lamp is active or not active.

BACK-UP (REVERSING) LAMPS 

Reading off if the back-up (reversing) lamp is on or off.

LEFT TURN SIGNAL LAMP 

Reading off if the left-hand turn signal lamps are on or off.

RIGHT TURN SIGNAL LAMP 

Reading off if the right-hand turn signal lamps are on or off.

LEFT LOW BEAM 

Reading off if the left-hand low beam is on or off.

RIGHT LOW BEAM 

Reading off if the right-hand low beam is on or off.

LICENSE PLATE LIGHTING 

Reading off if the license plate lighting is on or off.

HIGH BEAM 

Reading off if the high beam is on or off.

PARKING LAMPS, LEFT FRONT 

Reading off if the lamp is on or off.

PARKING LAMPS LEFT-HAND REAR 

Reading off if the lamp is on or off.

PARKING LAMPS, RIGHT FRONT 

Reading off if the lamp is on or off.

REAR RIGHT PARKING LAMP 

Reading off if the lamp is on or off.

CORNERING LIGHT, LEFT 

Readout of the requested light intensity that the Central Electronic Module (CEM) sends to the Left-hand Headlamp Module (LHCU) over the LIN bus to activate the cornering lamp.

CORNERING LIGHT, LEFT 

Readout of the requested light intensity that the Central Electronic Module (CEM) sends to the Right-hand Headlamp Module (RHCU) over the LIN bus to activate the cornering lamp.

OTHER INFORMATION 

FUEL LEVEL 

Presents current fuel level on the pump side as a value between 0-5 V.

FUEL LEVEL, EJECTOR SIDE 

Presents current fuel level on the ejector side as a value between 0-5 V.

Applies only to cars with saddle tank.

THE WINDSHIELD WASHER FLUID LEVEL 

Displays the status of the windshield washer fluid level.

Above 1 liter = there is more than 1 liter of washer fluid left in the reservoir.

Below 1 liter = there is less than 1 liter of washer fluid left in the reservoir.

POWER SUPPLY TO PEDALS 

Indicates the status of the power supply to sensors at the accelerator pedal (AP), brake pedal and clutch pedal.

The value can be activated or not activated.

SIGNALS FROM THE STEERING WHEEL MODULE (SWM) TO THE CENTRAL ELECTRONIC MODULE (CEM), VIA LIN. 

Indicates the command transmitted via LIN during activation of any of the functions on the steering wheel module (SWM).

SIGNALS FROM THE LIGHT SWITCH MODULE (LSM) TO THE CENTRAL ELECTRONIC MODULE (CEM), VIA LIN. 

Indicates the command transmitted via LIN during activation of any of the functions on the light switch module (LSM).

HAZARD WARNING SIGNAL FLASHERS, STATUS 

Displays the status of the hazard warning signal flasher switch.

Activated = The switch for the hazard warning signal flashers is activated.

Not activated = The switch for the hazard warning signal flashers is not activated.

TWILIGHT SENSOR, VOLTAGE, VALUE 

Measurement range: 0.25 - 4.90 V.

Shows the present light intensity.

Increased light intensity reduces the voltage over the photodiode.

SOLAR SENSOR, VOLTAGE, VALUE 

Measurement range: 0.15 - 4.85 V.

Shows the present light intensity.

Increased light intensity reduces the voltage over the photodiode.

From and including structure week 200746, the sun sensor has been replaced with twin sensors. 

FRONT POSITION SENSOR, VALUE (ONLY ON VEHICLES FROM MODEL YEAR 2012) 

Measurement range 0 -5 V. Shows the sensor signal for the front position sensor on the vehicle without the Suspension module (SUM). The engine must be running for the sensor to be supplied with voltage.

REAR POSITION SENSOR, VALUE (ONLY ON VEHICLES FROM MODEL YEAR 2012) 

Measurement range 0 -5 V. Shows the sensor signal for the rear position sensor on the vehicle without the Suspension module (SUM). The engine must be running for the sensor to be supplied with voltage.

PEDAL POSITION SENSOR 

CLUTCH PEDAL POSITION, EXTERNAL 

Reading off the clutch pedal's position. Measurement range 0 - 100 %.

Applies only to vehicles with:

• Manual transmission.
• Electric parking brake.

Vehicles with this sensor do not have Clutch pedal switch, internal, 25 %. 

CLUTCH PEDAL SWITCH, INTERNAL, 75%. 

Reading off if the clutch pedal is depressed 75% or more.

Applies only to cars with manual transmissions.

CLUTCH PEDAL SWITCH, INTERNAL, 25%. 

Reading off if the clutch pedal is depressed 25% or more.

Applies only to vehicles with:

• Manual transmission.
• Mechanical parking brake.
• 4 cylinder engine, 2.0 liter with 4 valves/cylinder

Vehicles with this sensor do not have Clutch pedal position sensor, external. 

BRAKE PEDAL SWITCH 

Reading off if the brake pedal is active or not active.

ACCELERATOR PEDAL (AP) POSITION SENSOR 

Reading off the accelerator pedal position. Measurement range 0-100 %.

RELAY 

RELAY IGNITION ON, ENGINE COMPARTMENT 

Reading off whether relay ignition on for engine compartment is active or not active.

RELAY IGNITION ON, LUGGAGE COMPARTMENT 

Reading off whether relay ignition on for luggage compartment is active or not active.

COMFORT RELAY 

Reading off if the comfort relay is active or not active.

RELAY, INTERIOR LIGHTING 

Reading off whether relay for interior lighting is active or not active.

RELAY INCREASED X-SUPPLY 

Reading off whether relay increased X-supply is active or not active.

RELAY WASHER MOTOR, FRONT 

Reading off whether relay washer motor front is active or not active.

Relay heated steering wheel 

Reading the control signal to the relay that the supplies Heated Steering Wheel Module (HSWM).

AUTOMATIC START/STOP OF ENGINE 

SECONDARY BATTERY RELAY 

Shows if the Central electronic module (CEM) requests from Engine control module (ECM) that the secondary battery relay should be activated or not. Central electronic module (CEM) requests activation of the relay when the secondary battery needs to be charged.

VOLTAGE SECONDARY BATTERY 

Shows secondary battery voltage.

Measurement scale: 0-18 V

When the engine is running (alternator charges) and the secondary battery is connected to the vehicle's electrical system, the secondary battery's voltage will be the same as the rest of the electrical system's voltage. If the secondary battery disconnected, the voltage will be lower.

VOLTAGE SECONDARY BATTERY, LATEST STORED 

Shows secondary battery's latest stored voltage.

Measurement scale: 0-18 V

For every new driving cycle, the Central electronic module (CEM) measure the voltage on the secondary battery and stores this value. If the vehicle has been parked with the ignition off for more than approx. 10 hours, the Central electronic module (CEM) uses the new voltage value to calculate how long time the secondary battery needs to be charged. If the vehicle has been parked with the ignition off for less than approx. 10 hours, the Central electronic module (CEM) uses the previously stored voltage value to calculate how long time the secondary battery needs to be charged.

VOLTAGE SECONDARY BATTERY, LOWEST AVERAGE VALUE 

Indicates the secondary battery's lowest stored average voltage.

Measurement scale: 0-18 V

Every time autostart is activated, the Central electronic module (CEM) continuously reads the secondary battery's voltage during the start sequence (during the time the secondary battery supplies the vehicle). The lowest value that is registered is saved by the Central electronic module (CEM) in its memory. At the next autostart, this sequence is repeated and the Central electronic module (CEM) calculates the average value of the previously registered voltage values and the last value. The average value is calculated at every autostart. This average value forms the basis for the secondary battery's SoC and capacity. If the calculated average voltage falls below 10.4 V in the actual operating cycle, the automatic start/stop of the engine function is no longer permitted. This is to prevent the battery from discharging to much.

CHARGING NEED SECONDARY BATTERY 

Shows how long time the secondary battery needs to be charged.

Measurement range: 0-65535 seconds.

Using the secondary battery's voltage at the start of the driving cycle, the Central electronic module (CEM) calculates how long time the secondary battery needs to be charged.

CHARGING TIME SECONDARY BATTERY 

Shows how long time the secondary battery has been charged during the latest driving cycle.

Measurement range: 0-65535 seconds.

TEMPERATURE SECONDARY BATTERY 

Indicates the calculated temperature of the secondary battery.

Measurement range: -40 - 215 °C.

DOWNTIME 

Shows how long time the vehicle has been parked, with the ignition off, at the last instance.

Measurement range: 0-24 hours.

VOLTAGE/POWER-SENSITIVE CONSUMERS OF ELECTRICITY 

Shows if voltage or power-sensitive consumers of electricity are activated/engaged or not. Depending on which power consumers are connected, the alternator voltage will be controlled differently. Included in the brake energy regeneration function.

Following can be shown:

- No voltage/power-sensitive consumers of electricity activated.

- Voltage sensitive consumers activated. For example: headlights, fog lights, blower fan motor, windscreen wipers.

- Voltage/power-sensitive consumers activated. E.g., electrical cooling fan motor, preheating coil, trailer connected, passenger compartment fan motor.

Depending on which power consumers are connected, the alternator voltage will be controlled differently. When voltage-sensitive consumers are activated, the alternator voltage is not allowed to vary too quickly. When voltage/power-sensitive consumers of electricity are activated, then the alternator voltage is not allowed to be lower than approx. 13.2 V. This is so that the available power will not be too low.

BATTERY MONITORING MODULE 

BATTERY CURRENT 

The parameter shows the current in respectively out of the battery.

Measurement range: -512- +512 A.

The value shows the vehicle's actual power consumption calculated by the battery monitoring sensor via the Central electronic module (CEM). The battery monitoring sensor registers the current in to or out of the battery and its size. With the ignition on without the external battery or battery charger connected, the vehicle's actual power consumption can be measured. By switching on different consumers their power consumption can be noted.

BATTERY VOLTAGE, BATTERY MONITORING SENSOR 

The parameter shows the battery voltage at the battery poles.

Measurement range: 0-16 V.

The value shows the battery's current voltage calculated by the battery monitoring sensor via the Central electronic module (CEM).

TEMPERATURE (MAIN) BATTERY 

The parameter indicates the battery's calculated temperature.

Measurement range: -40 - 80 °C.

The battery monitoring system calculates battery's internal temperature (battery acid) from the negative pole's temperature with the aim of regulating the correct charging voltage and calculating the correct battery capacity.

CHARGE LEVEL (MAIN LEVEL) BATTERY (SOC STATE OF CHARGE) 

The parameter indicates the battery's calculated state of charge.

Measurement range 0-100%.

The value indicates the battery charge level calculated by the battery monitoring system via the Central electronic module (CEM). Expressed as the amount of electrical energy that can be stored in a fully charged battery. Stated in % of full charge. Also called State of Charge, SoC

CHARGE BALANCE BATTERY 

The parameter indicates the actual charge balance of the battery.

Measurement range: -100 - +100 Ah.

The value indicates the charge balance calculated by the battery monitoring sensor via the Central electronic module (CEM) for the actual operating cycle. A positive value indicates that the battery is charged with energy (increased its capacity). A negative value indicates that the energy is discharged from the battery (reduced its capacity).

CALCULATING BATTERY STATUS 

The parameter indicates the actual status of the battery monitoring sensor's calculation of the battery status.

Not reliable = The sensor's calculation is not reliable.

Reliable = The sensor's calculation is reliable.

There are situations where the battery monitoring sensor's calculations of the battery's status temporarily are not reliable. Applies when charging of the battery takes place directly on the battery's terminals or when resting current consumption is more than 250 mA during 7 days. This means that the sensor never gets the possibility to measure the battery's resting voltage and thus not calculate the battery's charging status. If calculation is not reliable, functions like Brake energy recycling as well as Automatic start/stop of engine are blocked.

STANDBY CURRENT AVERAGE VALUE 

The parameter indicates the actual status of the battery monitoring sensor's calculation of the battery status.

Measurement range: 0-250 mA.

In "sleep mode", the battery monitoring sensor registers the vehicle's standby current every minute. The readout indicates the standby current's average value that the vehicle has had over the last 10 hours that the car has been in "sleep mode". The average value of the vehicle's standby current should be less than 25 mA.

COMMUNICATION BATTERY MONITORING SENSOR, STATUS 

The parameter indicates the actual status of communication between the battery monitoring sensor and the Central electronic module (CEM) via the serial communication method, LIN.

Following can be shown:

No communication = Communication not working.

Communication OK = Communication works.

In case of communication error, there will be a fault code stored in Central electronic module (CEM).

HINT: In case of a fault or when the fault becomes intermittent, it can take up to 10 seconds for the control module to show the correct status. 

BATTERY MONITORING SENSOR, STATUS 

The parameter indicates the actual status of the internal checks that the battery monitoring system performs.

Following can be shown:

Internal fault detected - Fault detected.

Fault-free = No fault detected.

In case of detected internal error, there will be a fault code stored in Central electronic module (CEM).

HINT: In case of a fault or when the fault becomes intermittent, it can take up to 10 seconds for the control module to show the correct status. 

BATTERY OPERATING TIME SINCE RESET OF BATTERY MONITORING SENSOR 

The parameter indicates how long the battery monitoring sensor has calculated the battery to be in the vehicle for.

Measurement range: 0 - 4095 days.

REQUEST CHARGE VOLTAGE ALTERNATOR 

The parameter indicates the voltage that the alternator should generate at the actual point of driving.

Measurement range: 10.6 - 16.0 V.

In case of detected internal error, there will be a fault code stored in Engine control module (ECM).

ALTERNATOR CONTROL 

The parameter indicates the actual status of alternator control. The alternator is controlled differently depending on the engine's efficiency, power consumption in the vehicle and the battery's status.

Following can be shown:

Conventional charging.

Brake energy regeneration, slow.

Brake energy regeneration, fast.

Brake energy regeneration, slow without discharge.

Battery reconditioning.

Battery identification.

For further information, see Design and function Brake energy regeneration.