Sensors And Switches
The F650GS uses a number of engine sensors and switches which are not always well documented.
This is a collection of information to assist in fault finding and sourcing alternative parts.
The Tridon Info pdf on the alternative parts page has fault finding information for some sensors.
Air Intake Sensor
BMW Part No 13 62 1 739 510 Air Temperature Sensor
It is also used on many E36/38/39/46 series cars and other bike models.
Possible Alternative - Airtex 5S1006,
Airtex Vehicle Electronics
The sensor needs cleaning periodically, At each service would be ideal.
Water Temperature Sensor
BMW Part No 13 62 1 703 993 is listed as a Double Temperature Switch.
It is actually a double sensor and only one sensor is used.
It is also used on many E36/38/39 series cars.
The socket and pins are documented on the on line car fiche.
Possible Alternative - Airtex 5S1481 Coolant Temp Sensor (E36 1999)
BMW Part No 11 78 7 685 320 Oxygen Sensor.
Currently listed as an NGK 6 Ohm
Bosch part number: 0 258 003 559 can be used
The Service Interval is 100,000 kms
Bosch Lambda Sensor Manual
Oil Pressure Sensor
BMW list it as Part No 12 63 7 689 965 Oil Pressure Switch - M12x1.5mm for all singles (CS/GS/G650GS/X650).
It requires a 90 degree adaptor on the F650GS/CS and is shown without the adaptor on the newer G/X models.
The switch is Normally Closed and operates at 0.3 - 0.6 bar
Adaptor Part No's are :
61 12 7 695 204 - Repair Line, Oil Pressure Switch $US26
11 11 7 695 425 - Adapter Oil Pressure Switch $US33
Oil Pressure - 0.5 BAR@1400rpm, 4 BAR Max@4500rpm
The listed part is an updated item, the original part was the same as the F650 which is an M10x1mm pitch unit.
The Switch for the 2010 G650GS is relocated closer to the clutch and the old switch location is capped with a
threaded plug. The new switch location is tapped to M12x1.5mm pitch thread to accept the switch directly.
The general consensus on the engine casing thread is:
F650GS 2000-2005 - M10 x 1.0mm - in original location - (Use adaptor with new BMW Part)
G650GS 2007-2009 - M12 x 1.5mm - in original location - (Use new BMW part without adaptor)
G650XC 2007-2009 - M12 x 1.5mm - in original location - (Use new BMW part without adaptor)
G650GS 2010-???? - M12 x 1.5mm - now in new location - old hole plugged - (Use new BMW Part)
1/ A little dirt/oil residue in the switch can cause the dash lamp to light at idle. Clean it before replacing.
2/ More information on alternative part sources is needed. Any additional information would be welcomed.
3/ The cost of the BMW adaptor and wiring repair lead adds complexity and makes purchase of it uneconomic.
4/ Possible alternatives for the F650GS/CS are Autozone Parts PS177, OP25511, Airtex PS177.
5/ Replacements in Oz/NZ - Tridon TPS021 (M10x1mm Single Connector) - TPS039 (M12x1.5mm 2 pin connector)
6/ BMW F650 Oil Switch Part No 12 63 7 670 015 - Oil Pressure Switch $US16 (Same price as the GS switch)
7/ The Tridon catalogue on the alternative parts page has test procedures for some sensors & switches.