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Service bulletin TT063

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10089851
Published by NHTSA2017-01-30
Manufacturer's numberTT063
Manufacturer's date2015-05-22
NHTSA componentEQUIPMENT; EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.

NHTSA's summary

"TECH TIP: NO BASS FROM AUDIO SYSTEM SYMPTOM: AUDIO UNIT LOCKS UP OR HAS NO BASS IN FREEZING TEMPERATURES. REPAIR: VERIFY THE CUSTOMER’S COMPLAINT AND MOVE THE VEHICLE INDOORS. IF AFTER THE TEMPERATURE INSIDE THE VEHICLE INCREASES THE HEAD UNIT RESUMES NORMAL OPERATION, CONSULT THE HEAD UNIT MANUAL EITHER IN THE GLOVE BOX OR ON KGIS, TO VERIFY THE MINIMUM OPERATING TEMPERATURE FOR THE HEAD UNIT. NOTE: THIS CONCERN IS CONSIDERED NORMAL OPERATION IF THE COMPLAINT SEEMS TO OCCUR AT OR BELOW THE MINIMUM OPERATING TEMPERATURE."

The document

No address for NHTSA's copy can be built for this communication. Ask the dealer for it by the manufacturer's number.

Components

Equipment and accessories

Vehicles listed
KIA KIA

Listing a model year does not mean every vehicle of it is concerned: the document says which.