Opel Astra J - Loss of coolant | HELLA

Opel

Astra J

Model year: 2010–2012

Engine: A16XER + A18XER

Loss of coolant

If, in the above vehicles, it is found that there is a gradual loss of coolant, this may be caused by the seal between the thermostat housing and thermostat.

As of May 2012, a modified seal has been used in production.

If a leak is found, the following remedial action should be taken:

  • Allow the coolant to cool down
  • Drain coolant
  • Disconnect electrical plug at the thermostat housing
  • Remove screws (4x) of thermostat housing
  • Remove housing
  • Clean sealing surfaces
  • Replace thermostat and seal
  • Fit thermostat housing
  • Connect connector
  • Refill coolant
  • Bleed cooling system
  • Carry out leak test

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.

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