Friday's low marks a 3 percent drop from last Friday's close of 5.62.
On Thursday, the lira weakened 1.2 percent following a lukewarm reaction on Wednesday to Finance Minister Berat Albayrak's package of economic reforms, notably a plan to provide 28 billion lira ($4.9 billion) to recapitalise state banks.
On Friday, Turkey's central bank corrected its figures of foreign currency deposits held by locals to $181.88 billion, a day after it announced it had dipped to $181.13 billion.
Analysts say Turks converting their savings into foreign currencies have signaled a decline of confidence in the lira.