BEIJING (Reuters) -Tesla said on Monday it would release its smart driving-assistance feature in China after completing regulatory approval, following complaints that a limited-time free trial of its Full Self-Driving service had been temporarily paused.

"All parties are actively advancing the relevant process and we will push it to you as soon as it is ready. We are also looking forward to it, please wait patiently," Tesla's customer support said on social media platform Weibo.

The message was posted as a comment under a feed of Tesla vice president Grace Tao's Weibo account.

The company said last Monday that it would launch the free trial of its FSD service in China between March 17 and April 16.

FSD is a suite of driving-assistance technologies developed with generative artificial intelligence to cope with more complicated traffic conditions.

Tesla is aiming for a full roll out of FSD this year, and is working with Chinese tech giant Baidu to improve the performance of the system, Reuters previously reported.

Tesla has offered such trials in the United States, where its FSD system does not require navigation maps to be accurate or up-to-date because local training of the AI helps the technology drive better.

But in China, Tesla has been unable to train the system with data from its 2 million EVs because of the country's data laws.

In late February, China's industry ministry issued new rules requiring autonomous driving-related over-the-air software upgrades to be subject to regulatory approval.

(Reporting by Beijing Newsroom Editing by Louise Heavens and Mark Potter)