General Information There are 9 test modes available which are indicated via the odometer display. The test mode number is indicated by the left digit in the display and the test values are the digits on the right. A comma is indicated by a low dash. Example: Test mode 1 "Fuel tank display", appears as which means test mode 1 and 80 liters. During test mode 2 "Momentary fuel consumption in liters per hour", the consumption values are indicated by a three or four digit display: Example: corresponds to test mode 2 and 3.4 l/h or corresponds to test mode 2 and 12.0 l/h. During test mode 6 "Resistance value of outside temperature gauge" the values are indicated by a three or four digit display: Example: corresponds to test mode 6 and 3.7 k . During test modes 1 - 9, the fuel tank version is displayed in the trip o odometer window. Example: indicates the standard fuel tank, indicates fuel tank with pass-through (non U.S.). USA vehicles are equipped with the standard fuel tank only. The fuel tank version display can be changed in test mode 1 by depressing the reset button of the trip odometer. The fuel tank version displayed last will be stored. Activation of Test Modes (displayed via odometer indicator window) Ignition: ON Depress center of clock adjusting knob "A" ( 23 or 24 Fig. 1) for at least 5 seconds and the display will appear in the odometer display window. Within 5 seconds pull out clock adjusting knob "B" and turn clockwise ( 23 or 24 Fig. 1) to activate the first test mode. For each additional test mode, the clock adjusting knob "B" must be pulled out and turned again clockwise. CAUTION! When the ignition is turned OFF , the test mode routine is canceled. Note: The test values that are indicated during diagnostics in the odometer display correspond to metric units of measure. A direct comparison between analog and digital displays is not possible. A comparison is only broadly possible. Examples: Fuel tank reading: Analog in gallons, Digital in liters, Fuel consumption gauge: Analog in miles per gallon, Digital in liters per hour.

Notes: Prerequisite for test modes 2 - 4 Engine: at Idle To perform all 9 test modes, it is advisable to start the engine before activating the test modes.

Diagnostic Test Mode Identification

Test mode no.	Function/component	Digital readout (example)	Corresponds to:
1	Fuel tank contents in liters (odometer display) Fuel tank version (trip odometer display)		80 liters, Standard fuel tank
2	Momentary fuel consumption in liters per hour		3.4 liters per hour, 12 liters per hour
3	Engine oil pressure in bar		2.0 bar
4	Engine rpm		4100 rpm
5	Engine oil level		0= Oil level OK, 1= Oil level not OK
6	Activation of oil pressure, fuel consumption and fuel tank gauges as well as speedometer and tachometer Resistance value of outside temperature gauge		Needle in first quarter of gauge dial ( 23 or 24 , Figures 2 and 3) 3.7 k
7	Activation of oil pressure, fuel consumption and fuel tank gauges as well as speedometer and tachometer		Needle in second quarter of gauge dial ( 23 or 24 , Figures 4 and 5)
8	Activation of fuel consumption and fuel tank gauges as well as speedometer and tachometer		Needle in third quarter of gauge dial, the oil pressure gauge stays in second quarter of dial ( 23 or 24 , Figures 6 and 7).
9	Activation of fuel tank gauge as well as speedometer and tachometer		Needle in fourth quarter of gauge dial, oil pressure gauge remains in second quarter, fuel consumption gauge remains in third quarter of gauge dial. ( 23 or 24 , Figures 8 and 9)