The 2019 Frontier is essentially a carryover of the D40 platform that launched in 2005, making it a 14-year-old design by this point. The 4.0L V6 VQ40DE is the workhorse engine most buyers get, and while fundamentally durable, this generation shows its age through transmission cooler failures and a notorious timing chain/guide issue that can grenade engines if ignored.
Radiator-Mounted Transmission Cooler Failure (Strawberry Milkshake of Death)
Common · high severity
Typical onset: 80,000-150,000 mi
Symptoms: Pink or milky fluid on transmission dipstick (coolant mixing with ATF), Transmission slipping, delayed engagement, or complete failure, Overheating transmission or engine, Sweet smell from exhaust or radiator
Fix: Replace radiator with aftermarket unit that has separate cooler (OEM design is flawed), flush transmission multiple times, often replace transmission if contamination was severe. 8-12 hours labor if trans survives, 18-25 hours if trans replacement needed. Many owners preemptively install external cooler and bypass radiator cooler entirely.
Estimated cost: $1,200-$5,500
Timing Chain Guide and Tensioner Wear (VQ40DE)
Common · high severity
Typical onset: 100,000-180,000 mi
Symptoms: Cold-start rattle for 2-5 seconds that worsens over time, Rattling noise from front of engine under acceleration, Check engine light with timing correlation codes (P0011, P0021), Metal shavings in oil, low oil pressure warnings in severe cases
Fix: Replace timing chains, guides, tensioners, and oil pump drive sprocket (known to shear teeth). Front cover removal required. This is preventive maintenance that becomes mandatory around 150k mi. 12-16 hours labor. Failure to address leads to jumped timing and catastrophic engine damage—hence the engine rebuild jobs in your data.
Estimated cost: $2,000-$3,500
Rear Differential Breather Clog and Seal Leaks
Occasional · medium severity
Typical onset: 60,000-120,000 mi
Symptoms: Gear oil leaking from pinion seal or axle seals, Whining or howling from rear axle under load, Differential breather tube clogged with mud/debris causing pressure buildup
Fix: Clean or relocate breather tube (should be checked during oil changes), replace pinion seal and/or axle seals as needed. Pinion seal requires diff removal and bearing preload reset. 3-5 hours labor for pinion, 2-3 hours per axle seal.
Estimated cost: $400-$900
Transmission Mount Collapse (Especially 4x4 Models)
Common · low severity
Typical onset: 70,000-130,000 mi
Symptoms: Clunk when shifting from Park to Drive or Reverse, Excessive driveline vibration at highway speeds, Visible sag or cracking in rubber transmission mount
Fix: Replace transmission crossmember mount. Straightforward job but requires supporting transmission. 1.5-2 hours labor. OEM mount is marginal; many techs upgrade to polyurethane aftermarket.
Estimated cost: $250-$450
Fuel Level Sending Unit Failure
Occasional · low severity
Typical onset: 90,000-150,000 mi
Symptoms: Fuel gauge reads empty when tank has fuel, or bounces erratically, Gauge stuck at full or half regardless of actual fuel level, Intermittent gauge operation, often temperature-dependent
Fix: Replace fuel pump/sending unit assembly. Tank must be dropped. 2.5-3.5 hours labor. Common enough Nissan issued a service bulletin, but no recall.
Estimated cost: $500-$800
Rear Leaf Spring Shackle Bushing Wear
Common · low severity
Typical onset: 80,000-140,000 mi
Symptoms: Clunking over bumps from rear suspension, Wandering or loose feel in rear end, especially when loaded, Visible cracking or missing rubber in shackle bushings
Fix: Replace rear shackle bushings and bolts. Bolts often seize requiring cutting/drilling. 2-3 hours labor per side if bolts cooperate, 4-6 hours if seized.
Estimated cost: $400-$900
Backup Camera Failure (Recall and Beyond)
Occasional · low severity
Symptoms: Backup camera image freezes or shows 'no signal', Intermittent camera operation, works when cool then fails when hot, Water intrusion visible behind camera lens
Fix: NHTSA recall 20V-666 covers some units for water intrusion causing short circuit. If outside recall scope, replace camera assembly. 0.8-1.2 hours labor. Camera itself is $200-400 part.
Estimated cost: $250-$500
Owner tips
Install an external transmission cooler and bypass the radiator's internal cooler ASAP—this is cheap insurance against the $5k SMOD failure
Listen for cold-start rattle on the VQ40DE and address timing components proactively around 120-150k mi before catastrophic failure
Check rear diff breather tube every oil change, especially if you off-road or drive in dusty conditions—relocate it higher if needed
Use quality full-synthetic oil (0W-20 for VQ40DE) and change every 5k mi to maximize timing chain life
Inspect transmission mount annually—replacement is cheap compared to driveline vibration damage
Buy a 2019 if the price reflects its ancient bones and you verify timing chains and trans cooler are addressed; otherwise, wait one year for the redesigned 2020+ model.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
Fitment notes: Standard top post configuration; battery located in engine bay
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Every control module on the 2018-2021 Nissan Frontier — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
📍 Inside transmission case, integrated with valve body (RE5R05A 5-speed auto)
🔧 CONSULT-III Plus with NTIS subscription
⚠️ Requires transmission pan removal and valve body drop. VIN programming and adaptive value initialization required. Manual transmission models have no TCM.
Electric Power Steering Control Module (EPS)2.5 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Integrated with steering column assembly, below instrument panel
🔧 CONSULT-III Plus with NTIS subscription
⚠️ Steering angle sensor calibration and zero-point setting required after replacement.
Anti-lock Brake System Control Module (ABS)1.8 hr R&Rrelearn only +0.3 hr▸ programming details
📍 Engine bay, driver side frame rail near master cylinder
🔧 CONSULT-III Plus or aftermarket scan tool
⚠️ Integrated hydraulic unit. Brake bleeding required after replacement. Steering angle sensor calibration required.
Transfer Control Module (TCCM)1.8 hr R&Rrelearn only +0.3 hr4WD models▸ programming details
📍 Under vehicle, mounted on transfer case
🔧 CONSULT-III Plus or aftermarket scan tool
⚠️ Controls electronic shift-on-the-fly 4WD system. Shift position relearn required. Not present on 4x2 models.
Intelligent Power Distribution Module (IPDM)1.5 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Engine bay, driver side fender well, near battery
🔧 CONSULT-III Plus with NTIS subscription
⚠️ Controls fuel pump, cooling fans, and multiple power distribution functions. Also houses NATS immobilizer. VIN programming required.
Around View Monitor Control Module (AVM)1.5 hr R&Rdealer / factory tool +0.8 hrAround View Monitor (360-degree camera)▸ programming details
📍 Behind center stack, near AVN unit
🔧 CONSULT-III Plus with NTIS subscription
⚠️ Camera calibration required after replacement. Only on higher trim levels with navigation.
Body Control Module (BCM)1.5 hr R&Rdealer / factory tool +1.0 hr▸ programming details
📍 Behind driver side kick panel, above fuse box
🔧 CONSULT-III Plus with NTIS subscription
⚠️ Controls lighting, door locks, power windows, wiper functions. VIN programming and configuration required. Key registration must be performed after replacement.
📍 Engine bay, driver side firewall, mounted on bracket above brake master cylinder
🔧 CONSULT-III Plus with NTIS subscription
⚠️ VIN programming and immobilizer pairing required. Some aftermarket tools (Autel MaxiSys Elite, Launch X431) can perform with proper security credentials but dealer tool recommended.
⚠️ Manages CAN bus communication between networks. VIN programming required. Does not implement SGW security lockout like European brands.
Sonar Control Module (SONAR)1.0 hr R&Rrelearn only +0.2 hrrear parking sensors▸ programming details
📍 Behind rear bumper, driver side
🔧 CONSULT-III Plus or aftermarket scan tool
⚠️ Self-calibration after installation. Not present on base models without parking assist.
Supplemental Restraint System Control Module (SRS)1.0 hr R&Rdealer / factory tool +0.5 hr▸ programming details
📍 Center console, beneath center stack trim, above transmission tunnel
🔧 CONSULT-III Plus with NTIS subscription
⚠️ VIN programming required. Occupant classification system calibration required after replacement.
Audio Visual Navigation Unit (AVN)1.0 hr R&Rrelearn only +0.3 hrnavigation system▸ programming details
📍 Center stack, behind touchscreen display
🔧 CONSULT-III Plus or aftermarket scan tool
⚠️ VIN registration recommended but not strictly required for basic function. Non-navigation models use simpler Audio Control Unit with minimal coding needs.
⚠️ Odometer programming and VIN transfer required by law. Configuration for vehicle options required.
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
BACK OVER PREVENTION: SENSING SYSTEM: CAMERA · 19V654000
2019-09-12
Nissan North America, Inc. (Nissan) is recalling certain 2018-2019 Nissan Altima, Armada, Frontier, Kicks, Leaf, Maxima, Murano, NV, NV200, Pathfinder, Rogue, Rogue Sport, Sentra, Titan, Titan Diesel, Versa Note and Versa Sedan vehicles, as well as Infiniti Q50, Q60, QX30 and QX80 vehicles. Additionally included are 2019 Nissan GT-R and Taxi and Infiniti QX50, QX60, Q70, Q70L vehicles. The back-up camera and display settings can be adjusted such that the rear view image is no longer visible and the system will retain that setting the next time the vehicle is placed in reverse. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 111, "Rear Visibility."
Consequence: The lack of an image in the back-up camera display increases the risk of a crash.
Remedy: Nissan will notify owners in phases, having dealers update the back-up camera settings software, free of charge. The recall began November 11, 2019 and all affected VINs should be activated. Owners may contact Nissan customer service at 1-800-867-7669 or INFINITI customer service at 1-800-662-6200.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2019 Nissan Frontier 2.5L I4 QR25DE and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.