I was looking up the service light for the e36 model and found this. Hope this helps others as well.
May be a sticky ?
BMW Service Lights
Normal Condition: Up to five green lights illuminate depending on vehicle use since new or last maintenance. Reduction of illuminated green lights is a countdown for the next service due.
Oil Service Alert: All green lights are off and only the yellow light is illuminated along with the "Oil Service" sign, alerting you that oil service is necessary
Inspection Service Alert: All green lights are off and only the yellow light is illuminated along with the "Inspection" sign, alerting you that this service is necessary.
Overdue Inspection Service Alert: The red light will illuminate along with the yellow one to serve as a warning that service is overdue; and in the interest of read safety and reliability, avoid driving your BMW. Schedule an appointment immediately.
Service Intervals
Inspections to be carried out
BMW Inspection I
Undercarriage
* Change engine oil and filter while engine is at normal operation temperature.
* Check transmission for leaks.
* Check rear axle for leaks.
* Visually check fuel tank, lines, and connections for leaks.
* Check condition, position, and mounting of exhaust system. Examine for leaks.
* Check power steering system for leaks.
* Check overall thickness of front and rear disc brake pads.
* Examine brake disc surfaces.
* Clean brake pad contact points in calipers.
* Grease wheel center hubs.
* Check steering for absence of play, condition of suspension track rods, front axle joints, steering linkage, and joint disc.
* Check front control arm bushing for wear.
* Check brake and clutch system connectors and lines for leaks, damage, and incorrect positioning.
* Check for free movement of the parking brake cables. Adjust parking brake if necessary.
* Check all tire pressures (including spare). Correct if necessary.
* Check condition of tires (outer surfaces (left/right)), tread wear and pattern; In case of uneven tread wear readjust wheel alignment if required.
Engine Compartment
* Read out diagnostic system
* Check engine cooling system/heater hose connections for leaks.
* Check coolant level and antifreeze protection level; add coolant if necessary.
* Check level of brake and clutch fluid in reservoir; add fluid if required.
* Check windshield washer fluid level and antifreeze protection. Fill up and/or correct if necessary.
* Check air conditioner for operation.
* Reset Service Indicator.
Body/Electrical Equipment
* Check battery electrolyte level and add distilled water if required.
* Perform batter load test.
* Check lighting system, i.e. headlights, foglights, parking, backup, license plate, interior (including map reading lights), glove box, flashlight, illuminated makeup mirrors, luggage compartment lights.
* Check instrument panel and dashboard illumination.
* Check all warning/indicator lights, check control.
* Check turn signals, hazard warning flashers, brake lights, horns, headlight dimmer/flasher switch.
* Check wiper and washer system(s); wiper blades, washer jet positions.
* Check condition and function of safety belts.
* Oil hood, trunk/tailgate, and door hinges.
* Grease hood, trunk/tailgate and door latches. Check operation of all latches.
* Check central locking/double lock.
* Replace microfilter or Acc. Cabin Filter.
* Check heater/air conditioner blower, rear window defogger.
* Check rear view mirrors
* Visually examine the SRS airbag units for torn cover, obvious damage or attachment of decals, decorations, or accessories.
Final Inspection
* Road test with check of brakes, suspension, steering, clutch/manual transmission or automatic transmission
BMW Inspection II
Undercarriage
* Change engine oil and filter while engine is at normal operation temperature.
* Check transmission for leaks.
* Check rear axle for leaks.
* Visually check fuel tank, lines, and connections for leaks.
* Check condition, position, and mounting of exhaust system. Examine for leaks.
* Check power steering system for leaks.
* Check overall thickness of front and rear disc brake pads.
* Examine brake disc surfaces.
* Clean brake pad contact points in calipers.
* Grease wheel center hubs.
* Check steering for absence of play, condition of suspension track rods, front axle joints, steering linkage, and joint disc.
* Check front control arm bushing for wear.
* Check brake and clutch system connectors and lines for leaks, damage, and incorrect positioning.
* Check for free movement of the parking brake cables. Adjust parking brake if necessary.
* Check all tire pressures (including spare). Correct if necessary.
* Check condition of tires (outer surfaces (left/right)), tread wear and pattern; In case of uneven tread wear readjust wheel alignment if required.
* Check thickness of parking brake linings.
* Half-shafts; check for leaks at flexible boots.
* Inspect entire body according to terms of rust prevention limited warranty.
Engine Compartment
* Read out diagnostic system
* Check engine cooling system/heater hose connections for leaks.
* Check coolant level and antifreeze protection level; add coolant if necessary.
* Check level of brake and clutch fluid in reservoir; add fluid if required.
* Check windshield washer fluid level and antifreeze protection. Fill up and/or correct if necessary.
* Check air conditioner for operation.
* Reset Service Indicator.
* Replace spark plugs (as applicable by year and model)
* Replace intake air cleaner element.
Body/Electrical Equipment
* Check battery electrolyte level and add distilled water if required.
* Perform batter load test.
* Check lighting system, i.e. headlights, foglights, parking, backup, license plate, interior (including map reading lights), glove box, flashlight, illuminated makeup mirrors, luggage compartment lights.
* Check instrument panel and dashboard illumination.
* Check all warning/indicator lights, check control.
* Check turn signals, hazard warning flashers, brake lights, horns, headlight dimmer/flasher switch.
* Check wiper and washer system(s); wiper blades, washer jet positions.
* Check condition and function of safety belts.
* Oil hood, trunk/tailgate, and door hinges.
* Grease hood, trunk/tailgate and door latches. Check operation of all latches.
* Check central locking/double lock.
* Replace microfilter or Acc Cabin Filter.
* Check heater/air conditioner blower, rear window defogger.
* Check rear view mirrors
* Visually examine the SRS airbag units for torn cover, obvious damage or attachment of decals, decorations, or accessories.
Final Inspection
* Road test with check of brakes, suspension, steering, clutch/manual transmission or automatic transmission
May be a sticky ?
BMW Service Lights
Normal Condition: Up to five green lights illuminate depending on vehicle use since new or last maintenance. Reduction of illuminated green lights is a countdown for the next service due.
Oil Service Alert: All green lights are off and only the yellow light is illuminated along with the "Oil Service" sign, alerting you that oil service is necessary
Inspection Service Alert: All green lights are off and only the yellow light is illuminated along with the "Inspection" sign, alerting you that this service is necessary.
Overdue Inspection Service Alert: The red light will illuminate along with the yellow one to serve as a warning that service is overdue; and in the interest of read safety and reliability, avoid driving your BMW. Schedule an appointment immediately.
Service Intervals
Inspections to be carried out
BMW Inspection I
Undercarriage
* Change engine oil and filter while engine is at normal operation temperature.
* Check transmission for leaks.
* Check rear axle for leaks.
* Visually check fuel tank, lines, and connections for leaks.
* Check condition, position, and mounting of exhaust system. Examine for leaks.
* Check power steering system for leaks.
* Check overall thickness of front and rear disc brake pads.
* Examine brake disc surfaces.
* Clean brake pad contact points in calipers.
* Grease wheel center hubs.
* Check steering for absence of play, condition of suspension track rods, front axle joints, steering linkage, and joint disc.
* Check front control arm bushing for wear.
* Check brake and clutch system connectors and lines for leaks, damage, and incorrect positioning.
* Check for free movement of the parking brake cables. Adjust parking brake if necessary.
* Check all tire pressures (including spare). Correct if necessary.
* Check condition of tires (outer surfaces (left/right)), tread wear and pattern; In case of uneven tread wear readjust wheel alignment if required.
Engine Compartment
* Read out diagnostic system
* Check engine cooling system/heater hose connections for leaks.
* Check coolant level and antifreeze protection level; add coolant if necessary.
* Check level of brake and clutch fluid in reservoir; add fluid if required.
* Check windshield washer fluid level and antifreeze protection. Fill up and/or correct if necessary.
* Check air conditioner for operation.
* Reset Service Indicator.
Body/Electrical Equipment
* Check battery electrolyte level and add distilled water if required.
* Perform batter load test.
* Check lighting system, i.e. headlights, foglights, parking, backup, license plate, interior (including map reading lights), glove box, flashlight, illuminated makeup mirrors, luggage compartment lights.
* Check instrument panel and dashboard illumination.
* Check all warning/indicator lights, check control.
* Check turn signals, hazard warning flashers, brake lights, horns, headlight dimmer/flasher switch.
* Check wiper and washer system(s); wiper blades, washer jet positions.
* Check condition and function of safety belts.
* Oil hood, trunk/tailgate, and door hinges.
* Grease hood, trunk/tailgate and door latches. Check operation of all latches.
* Check central locking/double lock.
* Replace microfilter or Acc. Cabin Filter.
* Check heater/air conditioner blower, rear window defogger.
* Check rear view mirrors
* Visually examine the SRS airbag units for torn cover, obvious damage or attachment of decals, decorations, or accessories.
Final Inspection
* Road test with check of brakes, suspension, steering, clutch/manual transmission or automatic transmission
BMW Inspection II
Undercarriage
* Change engine oil and filter while engine is at normal operation temperature.
* Check transmission for leaks.
* Check rear axle for leaks.
* Visually check fuel tank, lines, and connections for leaks.
* Check condition, position, and mounting of exhaust system. Examine for leaks.
* Check power steering system for leaks.
* Check overall thickness of front and rear disc brake pads.
* Examine brake disc surfaces.
* Clean brake pad contact points in calipers.
* Grease wheel center hubs.
* Check steering for absence of play, condition of suspension track rods, front axle joints, steering linkage, and joint disc.
* Check front control arm bushing for wear.
* Check brake and clutch system connectors and lines for leaks, damage, and incorrect positioning.
* Check for free movement of the parking brake cables. Adjust parking brake if necessary.
* Check all tire pressures (including spare). Correct if necessary.
* Check condition of tires (outer surfaces (left/right)), tread wear and pattern; In case of uneven tread wear readjust wheel alignment if required.
* Check thickness of parking brake linings.
* Half-shafts; check for leaks at flexible boots.
* Inspect entire body according to terms of rust prevention limited warranty.
Engine Compartment
* Read out diagnostic system
* Check engine cooling system/heater hose connections for leaks.
* Check coolant level and antifreeze protection level; add coolant if necessary.
* Check level of brake and clutch fluid in reservoir; add fluid if required.
* Check windshield washer fluid level and antifreeze protection. Fill up and/or correct if necessary.
* Check air conditioner for operation.
* Reset Service Indicator.
* Replace spark plugs (as applicable by year and model)
* Replace intake air cleaner element.
Body/Electrical Equipment
* Check battery electrolyte level and add distilled water if required.
* Perform batter load test.
* Check lighting system, i.e. headlights, foglights, parking, backup, license plate, interior (including map reading lights), glove box, flashlight, illuminated makeup mirrors, luggage compartment lights.
* Check instrument panel and dashboard illumination.
* Check all warning/indicator lights, check control.
* Check turn signals, hazard warning flashers, brake lights, horns, headlight dimmer/flasher switch.
* Check wiper and washer system(s); wiper blades, washer jet positions.
* Check condition and function of safety belts.
* Oil hood, trunk/tailgate, and door hinges.
* Grease hood, trunk/tailgate and door latches. Check operation of all latches.
* Check central locking/double lock.
* Replace microfilter or Acc Cabin Filter.
* Check heater/air conditioner blower, rear window defogger.
* Check rear view mirrors
* Visually examine the SRS airbag units for torn cover, obvious damage or attachment of decals, decorations, or accessories.
Final Inspection
* Road test with check of brakes, suspension, steering, clutch/manual transmission or automatic transmission