4.30 Headlight adjustment: checking LED
headlights
Note
♦
Additional weights are no longer used.
♦
Instead, a different inclination setting on the headlight adjust‐
ment unit is used.
♦
If the maintenance tables are used, the settings are dis‐
played in the vehicle-specific maintenance list.
♦
In the US, Canadian and Mexican markets, SAE-compliant
headlights are used.
♦
The headlight adjustment is subject to a separate charge.
Test and adjustment conditions ⇒ page 55
Headlight adjustment (ECE): checking ⇒ page 55 .
Check headlight adjustment (SAE). ⇒ page 56
LED headlights: adjusting ⇒ page 57 .
4.30.1 Checking and adjusting – prerequisites
• Tyre pressure OK
• Headlight lenses must not be damaged or dirty.
• Reflectors and lights OK
• The vehicle must be rolled forward and backward several
metres or front and rear springs must be bounced fully sev‐
eral times so that springs settle.
• Vehicle and headlight adjuster must be on a level surface.
• Vehicle and headlight adjustment unit must be aligned.
• Inclination must be set.
• If the headlight adjustment unit has an adjustment mode,
select it.
• Refer to the ⇒ operating instructions for headlight adjust‐
ment units.
• The current software for the headlight adjustment unit -VAS
621 001- is available on the equipment manufacturer’s
homepage.
4.30.2 Headlight adjustment (ECE): adjusting
Special tools and workshop equipment required
♦ Headlight adjustment unit -VAS 5046 A-
♦ Headlight adjustment unit -VAS 5047 A-
♦ Headlight adjustment unit -VAS 621 001-
– Check headlight height adjustment by setting the maximum
level and monitoring the headlights' light.
– In the infotainment system, tap the Vehicle function button,
and open menu option »Headlight range control«.
– Set headlight range to 0 .
ID.4 2021 ➤
Maintenance - Edition 12.2020
4. Descriptions of work 55
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