4.0

definitely annoying
Typical Repair Cost:
$580
Average Mileage:
55,050 miles
Total Complaints:
2 complaints

Most common solutions:

  1. not sure (1 reports)
  2. repair flap system (1 reports)
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problem #2

Jun 052017

Sonata Hybrid hybrid

  • CVT transmission
  • 75,000 miles

The active air flap system opens and closes depending upon temperature which helps with gas mileage. Since my flap is open, there is no harm to the car. But because the engine light comes on about 15 miles after clearing the code, I have to get it fixed so it passes inspection. $700 part/$200 labor won't pass inspection w/o fixing

- Barb W., Hickory, US

problem #1

May 072014

Sonata Hybrid

  • Automatic transmission
  • 35,004 miles

click to see larger images

Yesterday on my way home a warning came on my display "Check Active Air Flap System." This is a system Hyundai used to deflect air flow at high speed to optimize fuel economy. From reading different forums last night, it seemed more common than it should be and when I took it to the dealership this morning, his expression was about the same. If this is an issue Hyundai should issue a recall and correct the problem.

Update from May 12, 2014: Dealer stated that AAF system failure was due to damage to front bumper from impact causing AAF to be knocked off track. The damage they are referring to happened over 6 months ago. $250 later, the AAF was cleaned, greased, re-aligned and replace. It is my belief that the service to repair should be covered under warranty and a better system installed in future models.

Update from May 12, 2014: Dealer stated "DTC P1235 AAF system fail. Found damage to front bumper from impact causing AAF to be knocked off track (see photo). Removed bumper and AAF and cleaned air flap guides and reassembled AAF." The damage he was referring to was a scrap from a curb that happened over 6 months ago and some chips from rocks from the roadway. If minor, everyday driving conditions are going to cause the AAF to jump off the guides, 1) it should be covered under warranty, 2) it should be reevaluated and reengineered to hold up better.

- cwhawkins, Prosperity, SC, US