LG DLEX3900W how to turn off Control Lock on the DLEX3900W

When the buttons beep and nothing happens, or CL shows in the display.

Steps

1. Press the Power button to turn the dryer on.
2. Hold the Wrinkle Care button for 3 seconds. A chime sounds and the remaining time returns to the display.

Source: Operation: Control Lock Source: Operation: Control Lock, p. 42

Other DLEX3900W procedures

• How to clean the lint filterAfter every cycle, and when drying takes longer than usual.
• How to turn off Control Lock on the DLEX4000WWhen the buttons beep and nothing happens, or CL shows in the display.
• How to save a custom program on the DLEX3900WTo reuse a combination of settings.

Sources

1. Owner's Manual, Dryer DL*X390**. LG Electronics Inc. Document MFL70442672, revision Rev.00, 2024-02-26, 64 pages, en-US. gscs-b2c.lge.com. Listed on the manufacturer's support page. Retrieved 12 November 2026.
2. Owner's Manual, Dryer DL*X400** / DL*X408**. LG Electronics Inc. Document MFL70442676, revision Rev.02, 2026-06-25, 60 pages, en-US. gscs-b2c.lge.com. Listed on the manufacturer's support page. Retrieved 12 November 2026.

Page numbers are the numbers printed in the manual. Where this page and the manual differ, follow the manual.

Applies to

DLEX3900W (variants DLEX3900B; DLGX3901W; DLGX3901B), DLEX4000W (variants DLEX4000B; DLGX4001W). United States and Canada.

Source

Owner's Manual, Dryer DL*X390**, MFL70442672 revision Rev.00, 2024-02-26; Owner's Manual, Dryer DL*X400** / DL*X408**, MFL70442676 revision Rev.02, 2026-06-25

Last verified

12 November 2026

Handbook

LG DLEX3900W and DLEX4000W steam dryers in Dryers; all LG handbooks