TECHNICAL SERVICE BULLETIN: - TRANSMISSION FLUID APPLICATION GUIDE - This bulletin has been revised to include additional information. This bulletin provides information relating to the correct transmission fluid type and fill quantity requirement for each Kia model. A flush is required ONLY when a transmission is replaced, refer to applicable vehicles on page 2. Refer to the shop manual on KGIS for the specific Kia model for the correct transmission fluid check/fill procedures.
full bulletin at NHTSA ↗2006 Kia Sedona powertrain problems
severe 16 complaints filed with NHTSA · avg repair $2,500 · see powertrain across all vehicles →
Failure mileage
Complaints
16
Recalls
0
Avg fix
$2,500
3crashes
When does it fail?
Of the 16 powertrain complaints filed for the 2006 Kia Sedona, here's the actual mileage breakdown — failures cluster heaviest at 100,000-125,000 mi.
0-25k
25-50k
50-75k
75-100k
100-125k
125-150k
150k+
Each bar shows the share of total complaints filed at that mileage range. Peak failure window highlighted. Some owners report problems earlier; some make it well past 150,000 miles symptom-free. Maintenance habits and driving conditions shift the curve as much as mileage alone.
What stands out
Of the 10 model years of Kia Sedona we track for powertrain problems, this one carries the most owner complaints on file — 16.
No new NHTSA powertrain complaint has been filed on this vehicle in over 6 years — the issue may be aging out of the active population.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering powertrain on this vehicle — documented repair instructions, service campaigns, or warranty extensions sent to dealers. A TSB isn't a recall (it's not a free safety remedy), but it's the manufacturer acknowledging the issue and how to fix it.
TSB: AUTOMATIC TRANSMISSION FLUID APPLICATION GUIDE - THIS BULLETIN PROVIDES INFORMATION RELATING TO THE CORRECT AUTOMATIC TRANSMISSION FLUIDS THAT ARE REQUIRED FOR EACH KIA MODEL. REFER TO THE SHOP MANUAL ON KGIS FOR THE SPECIFIC KIA MODEL, THEN REFERENCE THE AUTOMATIC TRANSAXLE SYSTEM/ REPAIR PROCEDURES/ INSPECTION AND ADJUSTMENT SECTION FOR THE CORRECT ATF CHECK/FILL PROCEDURES.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners report a constellation of transmission and driveline problems on the 2006 Kia Sedona, many emerging early in ownership. Stalling and delayed engagement are frequent—pressing the accelerator produces engine RPMs without forward motion, sometimes requiring a second pedal press to engage. Several owners describe this happening on interstate merges at highway speed with children in the vehicle, creating acute safety hazards. Transmission lock-up at stop lights and in traffic has occurred, trapping vehicles in the roadway. Shift failures—inability to engage Drive or Reverse, or shifting into neutral unexpectedly—appear across multiple complaint narratives. One owner reported the vehicle lurching forward from a garage with minimal pedal pressure, with ESC lights illuminated. A separate incident involved unintended reverse motion from a remote starter aftermarket device. Front-end structural corrosion has loosened axle-to-transmission bolts and control arm assemblies, requiring replacement of struts, springs, and mounts. Owners report transmission replacements, computer resets, and repeated dealer visits without resolution. One owner cited 10+ shop visits and two transmission replacements over the vehicle's life. Brake light anomalies and shift-controller fractures also appear. P-codes P0885, P2135, and P2106 are documented in a few instances; others have no retrievable codes despite persistent symptoms.
Failure modes owners describe
Transmission stalling and delayed engagement
Engine revs but transmission does not engage; vehicle fails to move forward despite accelerator input. Owners must release and reapply pedal for vehicle to 'catch' and move. Occurs repeatedly over vehicle lifetime, sometimes 3–4 times per year.
When: Early in ownership (first occurrence reported in 2006 for April 2006 purchase); recurring throughout vehicle life
Symptoms owners cite: Engine revs, no forward motion; RPMs increase, vehicle does not accelerate; Requires second pedal press to engage; Occurs during highway merges and traffic
Codes mentioned: P0885 (limp mode, one narrative), No code retrieved (multiple owners report dealer unable to find diagnostic code)
Repairs/costs cited: One dealer reported speed control sensor; another reported low transmission fluid; dealer could not reproduce on repeated attempts. No permanent fix documented.
Recalls/TSBs owners mention: Kia claimed inability to fix without retrievable code; case numbers assigned (K1213970); lemon law buyback requests made but outcomes unclear.
Transmission lock-up and loss of drive in traffic
Transmission suddenly locks or refuses to shift, trapping the vehicle mid-roadway during stop-light stops or heavy traffic. Vehicle comes to abrupt halt with no ability to exit the road or warn following traffic.
When: May 2007 and November 2007 reported; also occurs at low mileage (2,000 miles)
Symptoms owners cite: Transmission locks at traffic light or in heavy traffic; Vehicle unable to move; trapped in roadway; No warning before lock-up; Risk of being struck by following vehicle
Repairs/costs cited: One incident treated with computer reset at dealership; second lock-up occurred after reset. No permanent repair documented.
Shift refusal and neutral engagement failures
Vehicle fails to shift into Drive or Reverse, or shifts into neutral unexpectedly during driving. Shift lever may become stuck in Park, requiring a screwdriver to move it. Brake lights malfunction in conjunction (lights on when brake not depressed, off when depressed).
When: Low mileage (2,000–40,000 miles); persists to higher mileage (70,000+)
Symptoms owners cite: Vehicle will not shift into Drive or Reverse; Shift lever stuck in Park; Vehicle appears in neutral during driving at 45 mph; Brake lights behave opposite of input (on without braking, off with brake applied); No engine warning light illuminated
Repairs/costs cited: Dealer diagnosed fractured shift controller on one vehicle; repair not completed. Dealer unable to duplicate on another.
Recalls/TSBs owners mention: Manufacturer did not assist; dealer provided no solution beyond diagnostic testing.
Unintended acceleration and loss of throttle control
Vehicle accelerates with minimal or no pedal pressure, or continues accelerating while driver applies brakes. ESC light illuminated. One incident involved remote starter aftermarket device allowing vehicle to shift into gear without key in ignition, resulting in crash. Another involved vehicle accelerating forward while parked and driver applied only brake pedal.
When: 40,000 miles (remote starter incident); mileage not specified for other unintended acceleration cases
Symptoms owners cite: Vehicle lurches forward with light throttle touch; Sudden, uncontrolled acceleration; Vehicle accelerates while brakes applied; Vehicle shifts into gear without key in ignition (with aftermarket remote starter); ESC warning light illuminated; Acceleration especially pronounced climbing hills or under engine stress
Repairs/costs cited: Aftermarket Audiovox remote starter (model PRO9556) allowed unauthorized shifting; contact notified both equipment manufacturer and vehicle manufacturer. No repair documented for throttle control issues.
Recalls/TSBs owners mention: Neither equipment manufacturer nor Kia would assume liability for remote starter incident. Manufacturer indicated vehicle excluded from recall for ESC/throttle issues.
Transmission wear and slip/whip on gear transitions
Transmission exhibits slip or whip sensation when releasing accelerator and reapplying it. Mechanic diagnosed transmission showing wear. Multiple transmission replacements performed on same vehicle.
When: 115,000+ miles; also early in ownership (first transmission replacement at approximately 2–3 months post-purchase)
Symptoms owners cite: Transmission slip or whip feel on pedal transitions; Stalling and rough shifting (persistent, 10+ shop visits); Transmission wear evident to independent mechanic
Repairs/costs cited: One vehicle required transmission replacement twice, plus main computer replacement and air sensor replacement. Owner reported 10+ service visits to Capital Kia (Austin, TX) without resolution.
Recalls/TSBs owners mention: Kia corporate provided guidance to service technicians on repairs; buyback/lemon law assistance status unclear.
Front-end structural corrosion causing driveline loosening
Strut mounts, control arms, and bolts connecting axle to transmission corrode and fail, loosening steering and driveline. Steering wheel becomes difficult to turn; loose axle-to-transmission bolt detected during highway driving.
When: Not specified; one failure at 130,000 miles; second failure (control arm previously repaired) suggests recurring issue over vehicle lifespan
Symptoms owners cite: Loud pop while turning; Steering wheel stiffens and becomes difficult to turn; Steering wheel requires nearly full rotation to turn corner; Vehicle vibrates through steering wheel at 65 mph; Loose bolt connecting axle and transmission identified by independent mechanic; Technician stated vehicle unsafe to drive
Repairs/costs cited: One owner required replacement of struts, springs, mounts, sway bar link pins, and front strut plates. Nelson Kia diagnosed need for engine block replacement; vehicle not repaired. Another owner reported prior control arm repair by Kia; corrosion recurred.
Recalls/TSBs owners mention: Manufacturer stated no recall available for loose axle-to-transmission bolt failure.
Brake system failures and electrical fuse burn-out
Brakes lock up, smoke, and make rumbling noise. Fuse box burned in engine compartment, causing loss of wipers and lights. Brake lights fail to turn off, or turn off when brakes are applied (opposite behavior).
When: Early ownership; brake lock-up and smoking reported approximately 1 month after transmission replacement in 2006
Symptoms owners cite: Brakes lock up during driving; Brake smoking and rumbling noise; Fuse box burned; Wipers and lights stopped working; Brake lights fail to turn off or light opposite to brake application
Repairs/costs cited: Brakes serviced under recall 06V26500 (Service Brakes; Foundation Components; Hoses; Lines/Piping and Fitting) on 09/20/06. Fuses replaced; electrical system serviced under recall 06V349000 (Electrical System; Wiring).
Recalls/TSBs owners mention: Recall 06V26500 and 06V349000; Kia corporate case K1213970 opened, promised buyback discussion with Tavares Davis (not fulfilled per owner report).
Synthesized from 16 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 1 most recent
Will not engage reverse gear and drive gears sometimes will not shift at higher speeds
Had powertrain trouble with your 2006 Kia Sedona?
File a complaint with NHTSA → It's free, official, and how every report above got here — owner filings are the federal safety record this page is built on.
Common questions
How serious is the powertrain problem on the 2006 Kia Sedona?
It's a meaningful issue. 16 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $2,500.
At what mileage does the powertrain typically fail?
Across the 13 complaints that reported odometer mileage, most powertrain failures cluster between 8,700 and 92,000 miles, with the median around 40,000. A quarter of owners report trouble before 8,700; a quarter make it past 92,000. Maintenance history matters more than the odometer alone — this is the reported failure window, not a guarantee.
What does it cost to fix?
Independent shops typically charge around $2,500 for powertrain repairs on this vehicle. Dealer pricing tends to run 20-40% higher. The exact figure depends on the specific failure mode, parts availability, and your local labor rates. If you're outside factory warranty, an extended service contract often covers this category.
Are there any recalls related to powertrain?
No active recalls currently cover powertrain issues on this vehicle. The complaints filed represent owner-reported failures that haven't risen to the level of a manufacturer-issued recall — but they're still worth knowing about before you buy or budget for repairs.
Related
Complaint and recall data sourced from the National Highway Traffic Safety Administration (NHTSA)
public records database. Verify the raw federal record at
nhtsa.gov/vehicle/2006/Kia/Sedona.
Severity ratings are derived from reported crashes, fires, injuries, and fatalities. Repair cost estimates are
independent-shop national averages and may differ in your area. Some links on this page are affiliate links.