Rear window defroster diagnosis operational check · ad6729s3000b · Mercedes-Benz WIS

AD67.29-S-3000B

Rear window defroster diagnosis operational check

4.3.98

MODEL 638 as of 1.5.98
with CODE (W51) 180° two-leaf rear door with window
with CODE (W62) Tailgate with window

	Connection and use of test equipment		AD00.00-S-1000AZ
	Rear window defroster diagnosis, previous knowledge		AD67.29-S-2000B
	Function check
Scope of test	Operation/Requirement	Specified value	Possible cause/Remedy
1 Rear window heater	Start engine
	Switch on rear window defroster button	Indicator lamp in button must come on	AD67.29-S-6000-02B AD67.29-S-6000-04B
	Switch off rear window defroster button, operating again	Indicator lamp in button must go out	AD67.29-S-6000-02B AD67.29-S-6000-04B
	Switch on rear window defroster	Rear window heating element must heat up	AD67.29-S-6000-06B
2 Illumination of rear window defroster button	Ignition: ON Switch on driving light	Lamp in button must come on	AD67.29-S-6000-07A

ad0000s1000az Connection and use of testing equipment
ad6729s2000b Rear window defroster diagnosis previous knowledge
ad6729s600002b Rear window defroster test of electrical system warning light
ad6729s600004b Rear window defroster test of electrical system pushbutton
ad6729s600006b Rear window defroster test of electrical system heating element
ad6729s600007a Rear window defroster test of electrical system illumination of rear window defroster switch