Technical Service Bulletin 21-AT-001H — 2019 HYUNDAI SONATA
POWER TRAIN
Bulletin Details
| TSB ID | 21-AT-001H |
| Manufacturer | |
| Vehicle | 2019 HYUNDAI SONATA |
| Component | POWER TRAIN |
| Communication Date |
Bulletin Summary
This bulletin provides the procedure to update the TCU for a rough idle in Drive with Neutral Control enabled. The rough idle may occur only at a stop in Drive with the A/C off and the ATF temperature between 158~210°F (70~99°C). This update also reduces vibration when the brake is released during Neutral Control operation and the accelerator pedal is depressed.
About Technical Service Bulletins
A Technical Service Bulletin (TSB) is a document issued by a vehicle manufacturer to its dealers, describing a known issue with a specific vehicle or set of vehicles and the recommended procedure to fix it. Unlike recalls, TSBs are not mandatory and are typically only performed if an owner reports the related issue. However, TSBs can be an indicator of common problems with a vehicle.
Other TSBs for the 2019 HYUNDAI SONATA
25-01-087H DCS
ENGINE
23-01-014H-6
ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE
23-FL-004H
ENGINE AND ENGINE COOLING:ENGINE:ENGINE CONTROL MODULE (ECU/ECM)
23-01-014H-2
ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:IMMOBILIZER/PROXIMITY:SENSOR
22-AT-007H
EQUIPMENT
21-EM-008H
ENGINE AND ENGINE COOLING
21-BE-008H
ELECTRICAL SYSTEM
20-AT-020H
POWER TRAIN
20-AT-004H
ENGINE AND ENGINE COOLING
19-AT-019H
ENGINE