TECHNICAL SERVICE BULLETIN: DATC HEATER OPERATION LOGIC IMPROVEMENT - This bulletin provides information to upgrade the air condition (AIRCON) software logic on certain 2020-2023MY Telluride (ON) vehicles equipped with Dual Air Temperature Control (DATC), produced from January 9, 2019 through June 6, 2023. The affected vehicles may exhibit temporarily reduced heater performance in cold climates, especially during prolonged idle operation or coasting.
full bulletin at NHTSA ↗2021 Kia Telluride visibility problems
moderate Owners of the 2021 Kia Telluride have filed 74 NHTSA complaints about the visibility, typically surfacing around 3,380 miles at roughly $350 to repair (U.S. federal records, as of July 2026). Source: NHTSA Office of Defects Investigation. See visibility across all vehicles →
Failure mileage
Complaints
74
Recalls
0
Avg fix
$350
| Model year | visibility complaints |
|---|---|
| 2020 Telluride | 135 |
| 2021 Telluride (this page) | 74 |
| 2022 Telluride | 84 |
| 2023 Telluride | 27 |
| 2024 Telluride | 25 |
| 2025 Telluride | 18 |
1injury
When does it fail?
Of the 74 visibility complaints filed for the 2021 Kia Telluride, here's the actual mileage breakdown — failures cluster heaviest at 0-25,000 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
Owners have filed 74 visibility complaints with NHTSA against this vehicle, but no formal recall covers the issue — the federal record reflects what manufacturers have admitted, not everything owners are reporting.
Among the 6 model years of Kia Telluride in our records for visibility problems, this one ranks #3 by owner-complaint volume.
Is there a fix? Manufacturer service bulletins
The manufacturer has issued service bulletins covering visibility 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.
TECHNICAL SERVICE BULLETIN: SUNROOF WIND DEFLECTOR ARMS AND MECHANISM PARTS REPLACEMENT - This bulletin provides information to perform a partial replacement of the sunroof wind deflector and mechanism arms on some 2019-2022MY Telluride (ON) vehicles produced from February 15, 2019 through January 19, 2022. The affected vehicles may experience the sunroof open/close operation inoperative and/or the sunroof wind deflector function inoperative.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners report two distinct visibility failures on 2021 Kia Tellurides: windshield damage and sunroof/moonroof failures.
Windshield cracking dominates the complaints. Owners describe minor impacts—a small pebble or rock chip—that rapidly spread into large cracks spanning the windshield within minutes to hours. Multiple owners state the crack appeared or spread while parked overnight with no impact event. Several windshields have cracked spontaneously without any identifiable cause. Owners compare their experience unfavorably to previous vehicles, stating they've never seen a windshield fail so easily or so quickly from minor road debris. Multiple narratives note this was a known issue on 2019–2020 models. Owners report being told by dealers the damage is impact-related and therefore not covered under warranty, despite claiming no visible chip or impact mark. Replacement costs run $1,000–$1,600, and some owners mention dealers require recalibration of lane-keep-assist cameras, adding to the bill. Small chips have expanded beyond repair capability before owners could arrange repair appointments.
Sunroof/moonroof glass failures occur with no warning. Multiple owners describe hearing a loud bang or pop while driving or parked, followed by the glass exploding or shattering. One sunroof exploded outward while the shade was closed, confining glass inside the vehicle—but the owner notes had the shade been open, glass would have struck occupants. Another sunroof stuck open, creating water-infiltration risk. One owner's moonroof failed at 900 miles; another at 190 miles; another at 8,137 miles. One case involved sunroof being stuck closed permanently.
Several owners express concern that Kia is aware of the defect (citing previous model-year acknowledgment) but denies responsibility on 2021 models. Dealerships refuse reimbursement or repair after owners paid out-of-pocket, and some dealers have acknowledged seeing the failures "before."
Same Kia Telluride visibility reports on nearby years: 2020 · 2022 · 2023 · 2024
Failure modes owners describe
Windshield cracking from minor impact
Small pebbles or rocks striking the windshield at highway or city speeds create a chip or small crack that rapidly propagates across the entire windshield within minutes to hours, rendering it unsafe and requiring full replacement rather than repair.
When: Upon impact while driving; mileage reported ranges from 772 miles to 8,000+ miles on new vehicles
Symptoms owners cite: Small chip or ding visible after minor rock strike; Crack spreads within minutes to hours; Crack extends across windshield, obstructing driver vision; Crack may originate from edges, centers, or below wipers; Owner may hear audible 'tick' or 'tink' sound at impact
Repairs/costs cited: Full windshield replacement required; Safelite charges ~$1,000; Kia dealership charges ~$1,600. Some replacements require recalibration of lane-keep-assist camera.
Recalls/TSBs owners mention: Dealers deny warranty coverage, claiming impact damage is not covered. 2020 model year had a known glass defect with customer satisfaction replacement program; 2021 owners report Kia refuses same coverage despite identical failure pattern.
Spontaneous windshield cracking (no impact)
Windshield develops large cracks or spider-web patterns overnight while parked or at rest, with no identifiable impact event, foreign object, or chip mark visible. Cracks can appear in garage, driveway, or parking lot and continue to spread.
When: While parked overnight or sitting in parking lot; one case occurred while driving with no felt or heard impact; mileage ranges from days after purchase to 8,000+ miles
Symptoms owners cite: No prior chip or visible damage; Crack appears suddenly overnight or while parked; Crack may originate from windshield edge, center, or near rear-view mirror; Crack continues to spread over hours or days; No spider-web pattern typical of impact damage; Smooth crack line (not jagged); Possible trigger: temperature change (AC to hot sun); unclear correlation
Repairs/costs cited: Full replacement required; one owner paid insurance deductible of $563; Safelite $1,000; Kia dealership $1,600. Technicians (glass repair shops, dealers) have confirmed cracks show no impact evidence.
Recalls/TSBs owners mention: Dealers claim cracks are impact-related and refuse warranty coverage. Dealers acknowledge awareness of 2020 model windshield issues but state no guidance from Kia on 2021 model responsibility.
Windshield cracking during repair attempt
Small rock chips become large cracks when a professional glass repair technician attempts to repair the chip, either by applying suction to remove condensation or applying pressure for resin injection. Windshield that could have been spot-repaired requires full replacement.
When: During scheduled professional repair appointment, days or weeks after initial chip
Symptoms owners cite: Small chip (pencil-point size or eraser size); Crack expands rapidly when technician applies suction or pressure; Technician reports the windshield is unusually fragile; Repair technician (experienced professional) states this is not normal
Repairs/costs cited: Full replacement required instead of chip repair. One owner cited cost differential between chip repair (minimal) and full replacement ($1,000–$1,600).
Rear side window spontaneous shattering
Driver-side rear window shatters without warning while vehicle is being driven on the interstate. Police confirmed the glass exploded without external impact evidence (no rocks, debris, or damage to vehicle). Glass scattered throughout interior and into child car seat.
When: While driving on interstate at normal highway speed; vehicle had 37,000 miles; no prior warning signs
Symptoms owners cite: Loud boom or explosion sound while driving; Glass shatters into large chunks and small shards throughout interior; Glass spreads widely through vehicle cabin and into car seat; No warning lights or indication prior to failure; No visible external impact or cause
Repairs/costs cited: Owner paid out-of-pocket for window replacement and glass removal from entire vehicle interior.
Sunroof spontaneous explosion
Sunroof glass explodes, shatters, or disintegrates without warning while driving or parked. No prior impact, accident, or damage. Owner hears loud bang or pop; glass may blow inward or outward. Occurs very early in vehicle ownership (under 1,000 miles in multiple cases).
When: While driving (45–70 mph) or while parked; mileage reported: 190 miles, 900 miles, 8,137 miles; one at 44,100 miles
Symptoms owners cite: Loud bang, pop, or explosion sound without warning; No prior cracking, damage, or warning signs; Glass explodes and shatters; If sunshade closed: glass contained inside vehicle on sunshade; if shade open: glass shards could enter cabin; Driver startled; one driver swerved on highway; Wind noise increases after failure; Noise like something moving on sunshade
Repairs/costs cited: Owner paid out-of-pocket for sunroof replacement after dealer refused repair, citing alleged vandalism despite no evidence. Another owner awaited parts for ~5 days.
Recalls/TSBs owners mention: Dealers informed customers they have seen this failure before but took no ownership. One dealer refused repair, claiming vandalism despite no evidence. Kia customer service case filed but no resolution documented.
Sunroof failure to close / stuck open
Sunroof/moonroof becomes stuck in open position and will not close. Creates water infiltration hazard in rain.
When: At 44,100 miles (one reported case)
Symptoms owners cite: Sunroof stuck in open position; No warning lamps or prior symptoms; Unable to close roof
Repairs/costs cited: Dealer confirmed component fault requiring replacement.
Sunroof track broken
Sunroof track breaks, preventing sunroof from closing. Dealer applied temporary tape patch that flew off while driving on highway.
When: <UNKNOWN>
Symptoms owners cite: Sunroof unable to close; Broken track visible
Repairs/costs cited: Dealer temporarily taped opening (~5 days until parts arrived and repair completed).
Windshield damage from snow/ice buildup
Small amount of snow slides from roof onto windshield, blocking visibility. Windshield wipers unable to clear accumulated snow effectively.
When: While driving in snowy conditions
Symptoms owners cite: Snow accumulation on windshield; Wipers cannot lift or clear snow; Visibility severely reduced; Owner forced to stop vehicle to manually clear windshield
Windshield with multipronged cracks (non-standard failure pattern)
Windshield develops unusual segmented, multipronged crack pattern that does not resemble typical road-hazard damage. Pattern resists standard mobile windshield repair techniques.
When: <UNKNOWN>
Symptoms owners cite: Multiple distinct crack segments or prongs; Does not accept standard windshield repair resin; Pattern atypical of impact damage
Repairs/costs cited: Mobile windshield repair unsuccessful due to crack pattern incompatibility.
Synthesized from 74 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 4 most recent
While driving, small amount of snow fell from roof on to windshield and was unable to see the road clearly. Wipers were unable to lift the small about of snow to clear the windshield. Luckily I was not on a busy road an was able to stop. After clearing the small amount of snow the wipers were able to function.
Windshield was found with a 4 foot crack. In it .nothing hit the windshield
Tl* the contact own a 2021 Kia telluride. The contact stated while the vehicle was parked due to a snow storm however, the next day the contact went to clean off the vehicle and noticed a crack in the front windshield. The contact took the vehicle to route 23 Kia (1 windbeam rd, riverdale, nj 07457) and was informed that there would be a fee assessed for the repair. The manufacturer was notified…
A tiny rock hit the windshield going 30 miles an hour. The crack has consistently grown every day. My whole windshield has to be replaced. I've never had a vehicle that has such a weak windshield. This car is only 11 months old. The crack is horizontal and affects my view if the road because it's right in the middle.
Had visibility trouble with your 2021 Kia Telluride?
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 visibility problem on the 2021 Kia Telluride?
It's a documented issue but not catastrophic. 74 complaints have been filed. Repairs average $350 and most owners catch it before it causes a breakdown.
At what mileage does the visibility typically fail?
Across the 10 complaints that reported odometer mileage, most visibility failures cluster between 1,900 and 8,000 miles, with the median around 3,380. A quarter of owners report trouble before 1,900; a quarter make it past 8,000. 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 $350 for visibility 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 visibility?
No active recalls currently cover visibility 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/2021/Kia/Telluride.
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.