The company had advanced the maintenance closure by three weeks to June 6-11, following a fire at the Manesar facilities of its supplier, Subros Ltd, on May 29.
"Due to the strenuous efforts made by all concerned, operations at MSIL's facilities in Gurgaon and Manesar have begun smoothly," the company said in a statement.
On an average, Maruti produces around 5,000 units a day from its two plants at Gurgaon and Manesar, which together have an annually capacity of rolling out 15 lakh units.