Fiat Idea / Lancia Musa - Hazard warning signal switches on without being activated | HELLA


Idea / Lancia Musa

Model year 2003 -2007

All models with manual temperature control

Hazard warning signal switches on without being activated

If the above-mentioned vehicles are found to have a problem with the hazard warning signal switching itself on without first being activated, the cause may be a defective hazard warning switch.

(Figure 1 / Figure 2 taking a Lancia Musa as an example)

Figure 1

An internal defect in the hazard warning switch triggers the activation of the hazard warning lights without the switch having been operated.

Repair notes:

We recommend the following procedure

  • Remove heating control panel of the manual temperature control.
  • Disassemble the heating control panel
  • Replace/renew hazard warning switch (Figure 2)
  • Assemble heating control panel in reverse order

This defect can also occur in other vehicle models that have identical components!

Figure 2

Important safety note Technical information and practical tips have been compiled by HELLA in order to provide professional support to vehicle workshops in their day-to-day work. The information provided on this website is intended for use by suitably qualified personnel only. Reprinting, distribution, reproduction, exploitation in any form or disclosure of the contents of this document, even in part, is prohibited without our express, written approval and indication of the source. The schematic illustrations, pictures and descriptions serve only for the purposes of explanation and representation of the instructions and cannot be used as a basis for installation or assembly work. All rights reserved.