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+--- Thread: ABL headlight issues (/showthread.php?tid=1204)
ABL headlight issues - Cbloggs - 02-07-2026
Hi, I’m having trouble diagnosing a fault with the active bending headlights on a 2018 XC90. Every time I use the headlights I get a headlight service required message and the following codes are confirmed:
HCML-U2F0078 Headlamp control module swivelling motor alignment or adjustment incorrect
HCMR-U2F0078 Headlamp control module swivelling motor alignment or adjustment incorrect
HCMR-B15A323 Headlamp swivelling feedback sensor - general signal failures - signal stuck low
CEM-B14C281 Headlamp input - bus signal/message failures - invalid serial data received
Local Volvo garage are scratching their heads too! They’ve tried recalibrating the suspension level sensors.
Any ideas? Seems strange both headlights would have issues at the same time unless they’re connected somehow.