System functions
With the Condition Based Service a maximum of 10 maintenance operations are realised:
- Engine oil
- Diesel particulate filter (either as standard or option)
*changed with new definition*
- Microfilter
*changed with new definition*
- Front brake pads
- Rear brake pads
- Spark plugs
*changed with new definition*
- Vehicle check
- Brake fluid
- Statutory vehicle inspection
- Statutory emissions test
*changed with new definition*
- Pre-delivery check (service function)
For reasons of clarity, maintenance operations and their intervals will be given first (valid for EURO vehicles). In certain countries, different values may be applicable for e.g. engine oil or spark plugs.
| Scope | Interval | Starting value/interval forecast | Time reference | |
|---|---|---|---|---|
| (calculated by) | Distance [km] | Time [months] | ||
| Engine oil (DME/DDE) |
flexible | DME: 25.000 DDE: 30.000 |
24 | On-board date |
| Microfilter (IHKA/IHKR/IHR) *changed with new definition* | flexible | 45.000 | 24 | On-board date |
| Front brake pads (DSC) | flexible | 40.000 | --- | --- |
| Rear brake pads (DSC) | flexible | 50.000 | --- | --- |
| Spark plugs (instrument cluster) *changed with new definition* | fixed | 100.000 (60,000 for a 1.6 litre spark-ignition engine) | --- | --- |
| Vehicle check (instrument cluster) | fixed | DME: 50.000 DDE: 60.000 | 48 | On-board date |
| Brake fluid (instrument cluster) | fixed | --- | 24 | On-board date |
| Statutory vehicle inspection (instrument cluster) | country-specific | --- | encodable | On-board date |
| Statutory emissions test (instrument cluster) *changed with new definition* | country-specific | --- | encodable | On-board date |
The on-board date is used for the display of escalation (green symbol, yellow symbol, red symbol). In addition, the on-board date is the basis for sorting the maintenance requirements in the display.
The on-board date stands still when the battery is flat or disconnected and must subsequently be corrected in the vehicle.
The on-board date must be set correctly when resetting maintenance requirements. Resetting is described in the general service information.
Engine oil
The determination of the correct time for a DME/DDE oil change depends on various values:
- Fuel consumption
The quantity of fuel used since the last oil change is recorded as an auxiliary quantity for evaluating the quality of the oil.
- Time
Once in place, the oil will deteriorate with age. The calculation for the oil change determines the latest date by which the oil must be changed. The reference time is the on-board date.
An oil change is due after 24 months at the latest.
The "engine oil" interval is flexible and dependent on the operating conditions. When resetting, the last value of the interval forecast is taken as the starting value for the new interval.
Special case: A defective oil level sensor will affect the display.
Microfilter
*changed with new definition*
The condition of the microfilter is calculated by the IHKA or IHKR control unit on the basis of the following values (= virtual sensor):
- Ambient temperature
- Wiper operation
- Useful life of the heater
- Air recirculation mode
- Vehicle road speed
- Fan speed
- Distance driven since the last filter change
- Time
A filter change is due after 24 months at the latest.
The "microfilter" interval is flexible and dependent on the operating conditions. When resetting, the last value of the interval forecast is taken as the starting value for the new interval.
The "microfilter" interval is flexible and dependent on the operating conditions. When resetting, the last value of the interval forecast is taken as the starting value for the new interval.
Front and rear brake pads
The condition of the brake pad is determined by the DSC control unit. The calculation is based on a signal from the brake pad wear sensors at 2 points (4 mm and 6 mm). The condition of the brake pad is determined with the help of the following input values:
- Wheel speed
- Braking pressure (determined by the open duration of the exhaust valve)
- Temperature of the brake disc (determined via a computer model consisting of wheel speed, brake pressure, ambient temperature, braking duration)
- Brakes service life
The "brake pad" interval is flexible and dependent on the operating conditions. When the interval is reset, the last value for the interval forecast is set as the starting value for the new interval (only if new brake pads are recognised by intact Brake pad wear sensors).
Spark plugs
*changed with new definition*
The distance-dependent interval for the spark plugs is managed in the instrument cluster (60,000 or 100,000 km, depending on the engine).
Vehicle check
The distance-dependent and time-dependent interval for the vehicle check is managed in the instrument cluster (48 months and DME: 50,000 km, DDE: 60,000 km).
Brake fluid
The time-dependent interval for the vehicle check is managed in the instrument cluster (24 months).
The reference time for the assessment is the on-board date.
Statutory vehicle inspection
The interval for the vehicle inspection is specified by the law of the country in which the vehicle is driven.
The target date is entered in the instrument cluster or in the Central Information Display (CID). The reference time is the on-board date. If the on-board date is wrongly set, this only affects the escalation level (green, yellow, red).
Statutory emissions test
*changed with new definition*
The interval for the exhaust gas inspection is specified by the law of the country in which the vehicle is driven.
The target date is entered in the instrument cluster or in the Central Information Display (CID).
The reference time is the on-board date. If the on-board date is wrongly set, this only affects the escalation level (green, yellow, red).
Pre-delivery check:
The pre-delivery check is carried out with a service function in the BMW diagnosis system (see relevant Enclosure).
This function is not visible to the customer.
Notes for service staff
The following information is available for service staff:
- General note:
- Diagnosis:
- Encoding/programming:
Subject to change.