Check, Adjust Low Beams - AP82.10-P-8263RA

Model 172 

with code 641 (Headlamps, LED, dynamic, left-side traffic) 

except code 460 (Canada version) 

except code 494 (US version) 

Model 172 

with code 642 (Headlamps, LED, dynamic, right-side traffic) 

except code 460 (Canada version) 

except code 494 (US version) 

Courtesy of MERCEDES-BENZ USA

Dynamic LED headlamps, ECE version 

Courtesy of MERCEDES-BENZ USA

Light gradient for low beams 

Courtesy of MERCEDES-BENZ USA

Light gradient for diagnostic light pattern 

Courtesy of MERCEDES-BENZ USA

Courtesy of MERCEDES-BENZ USA

	Risk of accident  from vehicle starting off by itself when engine running. Risk of injury  (bruises and burns) resulting from working on the engine while it is being started or when it is running.	Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
	General information on checking/correcting headlamp adjustment		AH82.10-P-1000-01A
	Preparatory activity
1	Prepare vehicle for checking/correcting headlamp adjustment		AP82.10-P-8260-10I
2	Determine degree of inclination for main headlamps
	Notes on determining headlamp aiming values	The degree of inclination for the main headlamps is specified on the model plate on the B-pillar on the passenger side.	AH82.10-P-1005-01A
3	Set specified degree of inclination for main headlamps at headlamp aimer (01)
4	Switch on low beam	When testing and adjusting the low beams, make sure that the extended fog light function is not  active.
	Check and, if necessary, adjust (checking and adjustment of the low beams is described at the left low beam headlamp (long range) (E1e16); the same procedure is used for the right side.)
5	Check height adjustment of left low beam headlamp (long range) (E1e16); adjust if necessary	If for a low beam light gradient the height adjustment is correct, the light-dark boundary (1) of the light gradient for the left low beams (long range) (E1e16) to the left of the center mark (3) must be congruent with the reference line for the height adjustment (2) in the headlamp aimer (01), as shown in the colored image. The colored area of the light-dark boundary (1) of the left low beam headlamp (long range) (E1e16) must be above the reference line for the height adjustment (2), as shown in the color image. If the height adjustment of the left low beams (long range) (E1e16) is correct. ↓ No further check necessary, continue with operation step 6. If the height adjustment of the left low beams (long range) (E1e16) is not correct. ↓ Adjust zero position using diagnostic system in headlamp control unit. Diagnosis → Control units view → Body → SG-SW left headlamp → Adaptations → Zero position adjustment.
		↓ Switch on rectangular diagnostic light pattern using diagnostic system. Diagnosis → Control units view → Body → SG-SW left headlamp → Adaptations → Adjusting headlamps using diagnosis.	AD00.00-P-2000-04A
		↓ When the diagnostic light pattern is switched on and the height adjustment is correct, the horizontal light-dark boundary (1) of the left low beam headlamp (long range) (E1e16) to the left of the center mark (3) must be congruent with the reference line for the height adjustment (2) in the headlamp aimer (01). The colored area of the light-dark boundary (1) of the left low beam headlamp (long range) (E1e16) must be above the reference line for the height adjustment (2). If the height adjustment of the left low beams (long range) (E1e16) is correct with the diagnostic light pattern switched on. ↓ No further check necessary, continue with operation step 6. If the height adjustment of the left low beams (long range) (E1e16) is not correct with the diagnostic light pattern switched on. ↓ Turn the adjustment screw for the height adjustment (H) to correct the height adjustment of the left low beams (long range) (E1e16).	AD00.00-P-2000-04A
6	Check lateral adjustment of left low beam headlamp (long range) (E1e16); adjust if necessary	If, for a low beam light gradient the lateral adjustment is correct, the light-dark boundary (1) of the light gradient for the left low beam headlamp (long range) (E1e16) starting at the center mark (3) on the right must be congruent with the reference line for the lateral adjustment (4) in the headlamp aimer (01), as shown on the color image. The colored area of the light-dark boundary (1) of the left low beam headlamp (long range) (E1e16) must be above the reference line for the lateral adjustment (4), as shown in the color image. When the diagnostic light pattern is switched on and the lateral adjustment is correct, the vertical light-dark boundary (1) of the left low beam headlamp (long range) (E1e16) each starting at the center mark (3) must run upward at 90° to the reference line for the height adjustment (2) in the headlamp aimer (01). The colored area of the vertical light-dark boundary (1) of the left low beam headlamp (long range) (E1e16) must be to the left of the center mark (3). If the lateral adjustment of the left low beams (long range) (E1e16) is correct with the diagnostics light pattern already switched on ↓ No further check necessary, continue with operation step 7. If the lateral adjustment of the left low beams (long range) (E1e16) is not correct with the diagnostics light pattern already switched on ↓ Turn the adjustment screw for lateral adjustment(S) to correct the lateral adjustment of the left low beam headlamp (long range) (E1e16). If lateral adjustment of the left low beam headlamp (long range) (E1e16) is correct. ↓ No further check necessary, continue with operation step 7. If lateral adjustment of the left low beam headlamp (long range) (E1e16) is not correct. ↓ Adjust zero position using diagnostic system in headlamp control unit. Diagnosis → Control units view → Body → SG-SW left headlamp → Adaptations → Zero position adjustment.
		↓ Switch on rectangular diagnostic light pattern using diagnostic system. Diagnosis → Control units view → Body → SG-SW left headlamp → Adaptations → Adjusting headlamps using diagnosis.	AD00.00-P-2000-04A
		↓ Check the height adjustment of the left low beam headlamp (long range) (E1e16) again using the diagnostic light pattern switched on; if necessary, correct by turning the adjustment screw for the height adjustment (H). ↓ Check the lateral adjustment of the left low beam headlamp (long range) (E1e16) with the diagnostic light pattern switched on; if necessary, correct by turning the adjustment screw for the lateral adjustment(S).	AD00.00-P-2000-04A
	Finishing activity
7	Reset switch positions to input condition	Only if the high beam setting is not to be checked afterwards.