Malfunction of windshield washer nozzles at temperatures below 0°C - AF82.35-P-6001A

MODEL 171.### ## up to 008335 

OPERATION NO. OF OPERATION TEXTS OR STANDARD TEXTS AND FLAT RATES

Category	Op. no.	Operation text	Time
P	024610	Check electrical line for windshield washer nozzle heater	005 WU
P	024717	Install electrical line for windshield washer nozzle heater (after checking).	005 WU

Damage code	Cause	Remedy
59 483 74	Heat output of windshield washer nozzle heater not sufficient	If complaint is received, first check according to work instructions and convert if necessary
	Wiring harness connected in serial rather than in parallel	1 Remove plug (3) from left and right windshield washer nozzle (figure A). Hose can remain installed.
		2 Check lines for continuity: ↓ Test step 1:  Measure continuity between pin 1 right nozzle and pin 1 left nozzle (figure A). Measure continuity between pin 2 right nozzle and pin 2 left nozzle (figure A). If continuity is present, do not replace wiring harness (5), check individual components. Test step 2:  Measure continuity between pin 1 right nozzle and pin 2 left nozzle (figure A). If continuity is present, perform the following repair: ↓
		2 Remove air inlet grate on both sides.	AR88.40-P-3001V
		3 Remove foam pieces
		4 Fasten pull wire or cable (4) on left end of wiring harness (5) to facilitate installation (figure B).
		5 Pull out wiring harness (5) and remove the two tie straps (6) from the engine hood hinge (7) (figure B).
		6 Slide adapter wiring harness (8) at left on engine hood hinge (7) into engine hood and pull in with aid of pull wire or cable (4).
		7 Fasten adapter wiring harness (8) to engine hood hinge with tie strap (6).
		8 Install foam pieces.
		9 Connect adapter wiring harness connector (8) to wiring harness connector (5) Random assignment
		10 Remove nut (8) from weld stud behind washer fluid reservoir filler neck (10) (figure C). Nut (9) is not longer required.
		11 Fasten wiring harness bracket by pressing onto weld stud (11) (figure C)
		12 Tie back wiring harness (5) extension and position below washer fluid reservoir filler neck (10) (figure C). Ensure that the wiring harness (5) is positioned without pinching to prevent damage
		13 Insert plug for adapter wiring harness into left and right water nozzle.
		14 Install air inlet grate on both sides.	AR88.40-P-3001V
		15 Check window washer fluid concentrate, correct if necessary

Fig 1: Identifying Windshield Washer Nozzles

Courtesy of MERCEDES-BENZ USA

Fig 2: Removing Tie Straps From Engine Hood Hinge

Courtesy of MERCEDES-BENZ USA

Fig 3: Tying Back Wiring Harness Extension

Courtesy of MERCEDES-BENZ USA

Figure C 

PART ORDERING NOTES

Part no.	Designation	Quantity
A 171 540 86 09	Adapter wiring harness	1