Check and correct the adjustment of the headlamps

AP82.10-P-8260V

Check and correct the adjustment of the headlamps

19.11.2019

Model

171, 172

Halogen headlamp, shown on model 172 up to model year 2016

E1

Left front lamp unit

E1e1

Left high beam

E1e2

Left low beam

Halogen headlamp, shown on model 172 as from model year 2017

E1

Left front lamp unit

E1e1

Left high beam

E1e2

Left low beam

Bi-xenon headlamp, shown on model 172 as from model year 2017

E1

Left front lamp unit

E1e1

Left high beam

E1e10

Left xenon bulb with integrated ignition module

Dynamic LED headlamp, shown on model 172

E1

Left front lamp unit

E1e15

Left low beam (short range)

E1e16

Left low beam (long range) and high beam

Shown model 172

01

Headlamp aimer

E1

Left front lamp unit

 Danger

Risk of death when working on component parts and systems with U >= 30 V alternating voltage (AC) or U >= 60 V direct voltage (DC)

Do not touch damaged or defective live component parts and lines or non-insulated electrical connections and lines.

AS00.00-Z-0035-01A

 Warning

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

 Danger

Risk of explosion/risk of fire caused by highly flammable materials in the vicinity of damaged xenon bulbs. Risk of injury caused by UV light, hot components on xenon headlamps and glass splinters produced by bursting xenon bulbs. Risk of poisoning caused by inhalation of mercury vapors and by swallowing of/skin contact with toxic salts and mercury compounds.

Do not touch parts conducting high voltage. Persons with active electronic implants (e.g. cardiac pacemakers) must never work on xenon headlamps. Switch off the entire lighting system. Wear insulated safety shoes, safety glasses and protective gloves. Remove highly inflammable materials from the danger zone. Ensure sufficient ventilation in the working area.

AS82.10-Z-0001-01A

General information on checking/correcting headlamp adjustment

AH82.10-P-1000-01A



Check

1

Check low beam setting; adjust if necessary

Halogen headlamp ECE version

AP82.10-P-8263VA

Halogen headlamp SAE version

AP82.10-P-8263UA

Bi-xenon headlamps, ECE version

AP82.10-P-8263SA

Bi-xenon headlamps, SAE version

AP82.10-P-8263TA

Dynamic LED headlamps, ECE version

AP82.10-P-8263RA

Dynamic LED headlamps, SAE version

AP82.10-P-8263QA


Before the low beams are checked and adjusted, all operation steps listed in the linked description must be performed carefully.
Otherwise it cannot be guaranteed that the headlamps concerned are correctly set, which can then jeopardize the road safety of the vehicle.

2

Switch on high beam

On vehicle with active high beams assistant



Have a second person actuate the headlamp flasher in order to activate the high beams.

3

Check setting of high beam

AP82.10-P-8260-02V



000 588 11 21 00 Adjustment device

WS82.00-P-0151B

 The high beams are adjusted when the corresponding low beam headlamp is adjusted; the high beams cannot be adjusted separately.
Headlamp adjuster (01) must be positioned before the left high beam (E1e1) or low beam (long rage) and left high beam (E1e16). Carry out the same procedure for the right side.

If the high beam setting is not OK.



Rectify the problem subject to a separate repair order.

4

Check fog lamp setting

On vehicle with front fog lamps.

AP82.10-P-8260-04V

5

Reset switch positions to input condition