New Delhi: Maruti Udyog Ltd., India’s largest carmaker, will raise prices of all its models by up to Rs 12,000 from January. The company, which raised prices in August, has informed its dealers that another revision will be made, market sources said. Maruti has sent letters to its dealers regarding the hike in prices from next month, but has not disclosed the exact quantum of price increase each model will attract. The company has said it will go for a plant maintenance shutdown from December 24-31 and advised dealers to plan their wholesales from the factory in such a way that they do not face a stock-out situation for the stock at old price. Also, it asked dealers to make sure there were no complaints on account of vehicles booked by them but not delivered. The new prices will be applicable on all dispatches from the date of announcement of actual price increase and there would be no price protection for pending orders, the company has said.