Vauxhall is to begin a second recall programme for its Zafira B model following a series of fires.
The fires, which Vauxhall says are due to improper repairs to the heating and air conditioning system, have already been subject to a recall in December.
The original rework replaces the resistor pack and other faulty components and returns the heating and ventilation system to its original design condition. 234,938 vehicles are affected, and owners have been notified.
Following a status update to DVSA, Vauxhall has now announced a further repair process.
A spokesman said: "While the current action achieves the objective of returning vehicles to their original condition, after extensive investigations we have decided to go further and improve the overall robustness of the system.
"We will therefore be initiating a second recall to replace the current soldered fuse resistor with a wax fuse resistor so reducing the opportunity for manipulation. When the recalls are complete, all vehicles will have a new wax fuse resistor, a new blower motor and a new moulding at the base of the windscreen to address water ingress."
The second recall will be free of charge, with drivers invited in for repairs from mid-August.
The spokesman added: "Owners of vehicles which have not yet had the initial recall completed should still bring their vehicles to their dealership to have them returned to their original condition."