TSB: The Immobilizer and Smart Key Reset is a feature that allows the registration of new keys when all master keys are lost. Once the system is reset, all previously registered keys will be erased. Follow the procedures in this bulletin to reset a vehicle Immobilizer or Smart Key system.
full bulletin at NHTSA ↗2007 Toyota Tundra electrical problems
severe 15 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Failure mileage
Complaints
15
Recalls
0
Avg fix
$850
4fires
When does it fail?
Of the 15 electrical complaints filed for the 2007 Toyota Tundra, 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
No new NHTSA electrical complaint has been filed on this vehicle in over 13 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 electrical 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.
TT: Some customers may encounter Bluetooth® connectivity concerns such as: ?Difficulty to pair the phone. ?Intermittent Bluetooth® failure to connect to the vehicle when first turning on the vehicle. ?Various Bluetooth® Audio functions are no longer functioning with customer?s phone such as ability to change the track using the steering wheel controls. These concerns can be caused by changes made on the customer?s phone. Make sure to inquire with the customer if the connectivity concerns occurred after receiving an operating system update on their phone, or if they have restored their phone data/settings recently.
full bulletin at NHTSA ↗TSB: REVISION NOTICE July 01, 2019 Rev2: ? Applicability has been updated to 2019 ? 2020 model year Toyota vehicles. ? The Techstream Preparation and Process Overview sections have been updated. October 30, 2017 Rev1: ? Applicability has been updated to include 2018 model year vehicles. Any previous printed versions of this bulletin should be discarded. SUPERSESSION NOTICE The information contained in this bulletin supersedes SB No. T-SB-0012-13. Service Bulletin No. T-SB-0012-13 is obsolete and any printed versions should be discarded. Be sure to review the entire content of this bulletin before proceeding. Flash reprogramming allows the Electronic Control Unit (ECU) software to be updated
full bulletin at NHTSA ↗TT: Some customers may encounter Bluetooth® connectivity concerns such as: ? Difficulty to pair the phone. ? Intermittent Bluetooth® failure to connect to the vehicle when first turning on the vehicle. ? Various Bluetooth® Audio functions are no longer functioning with customer?s phone such as ability to change the track using the steering wheel controls. These concerns can be caused by changes made on the customer?s phone. Make sure to inquire with the customer if the connectivity concerns occurred after receiving an operating system update on their phone, or if they have restored their phone data/settings recently.
full bulletin at NHTSA ↗TSB: REVISION NOTICE November 22, 2017 Rev1: ? Applicability has been updated to include 2014 ? 2018 model year vehicles. Any previous printed versions of this bulletin should be discarded. In the event that a Toyota vehicle becomes submerged in water, many components may be physically damaged. Electrical and electronic components, including wiring harnesses, are particularly susceptible to corrosion and subsequent malfunction. Although any flooding can be damaging, salt water flooding elevates the potential for abnormal conditions and may increase risks due to its highly corrosive and conductive nature. Salt residue also continues to corrode and remain conductive even after a vehicle dries.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
The 2007 Tundra electrical system shows several distinct failure patterns across 15 complaints. The most dangerous are power window switch fires—smoke and flames erupting from the driver-side door panel during normal operation, with one case involving melted switch components and arcing. Owners also report a chronic P2440 code fault causing limp-mode speed reduction to 40 mph regardless of throttle, sometimes stranding drivers in interstate traffic. This failure repeats even after code clearing and strikes three years into ownership, with Toyota quoting $3,400 repairs and denying coverage beyond warranty.
Water intrusion into the secondary air injection pump disables the truck or locks it into low-speed limp mode, documented as a common issue by dealers who refused warranty repairs. Door locks fail repeatedly—all four units stop working, and Toyota replaced them once under warranty, but when the replacements failed again within a month, the manufacturer quoted $2,000 and denied it was a defect. One owner with electrical engineering background described starting failures as electrical in nature across multiple dealer visits with no fix applied. A separate case involved rodent damage to soy-based engine wiring, causing sudden loss of power during highway driving. Radio and CD equipment has melted and failed repeatedly even after multiple replacements. The instrument cluster is illegible in sunlight—a design flaw since new. Most owners faced warranty denials when mileage exceeded coverage limits.
Same Toyota Tundra electrical reports on nearby years: 2005 · 2006 · 2008
Failure modes owners describe
Power window switch fire/smoking
Driver-side master power window control switch overheats, smokes, and catches fire. Passenger-side window switch melts. Activation of air conditioning or window operation triggers the failure.
When: At vehicle startup or shortly after; reported between 40,000–200,000 miles
Symptoms owners cite: Burning electrical wire smell; Heavy smoke pouring from driver-side door panel; Small flames visible from switch area; Arcing and sparking inside door panel; Melted switch components; Stuck power window button preceding failure
Repairs/costs cited: Fuse removal stops smoke. Toyota dealerships have replaced entire switch assemblies; costs not specified by owners. One owner disconnected battery to halt arcing.
Recalls/TSBs owners mention: No formal recall issued as of complaint dates. Dealership service responsive in identifying correct fuse location.
P2440 code with secondary air injection system fault
Check engine light, 4LO light, traction control light, and VSC light illuminate. Vehicle enters limp mode, speed reduced to 40 mph or lower regardless of throttle input. Occurs intermittently and repeatedly; owners repeatedly clear code with handheld diagnostic tool.
When: Reported after 3 years of ownership; 40,000–70,000 miles; persisted for 13 months in one case
Symptoms owners cite: Multiple warning lights blinking simultaneously; Sudden speed reduction to 40 mph or lower; Engine surging; Engine stalling while driving; Truck dying and failing to start for several minutes; Repeated limp-mode activation
Codes mentioned: P2440
Repairs/costs cited: Toyota quoted $3,400 to repair. Secondary air intake inspection mentioned but reportedly did not resolve the issue. One owner with similar truck outside warranty received repair; warranty denials common beyond coverage period.
Recalls/TSBs owners mention: Toyota acknowledged problem and promised repair in some cases but delayed or refused work, especially when vehicles exceeded warranty mileage.
Water intrusion into air injection pump
Moisture enters secondary air injection pump, causing electrical faults. Entire instrument panel lights illuminate. Engine loses power during driving and becomes disabled or hobbled to low-speed limp mode.
When: 90,000–136,000 miles
Symptoms owners cite: All instrument panel lights on simultaneously; Engine power loss while merging or driving at speed; Vehicle limited to approximately 30 mph; VSC/stability control warning light illuminated and flashing; Engine shutdown during highway driving
Repairs/costs cited: Dealers identified water intrusion as cause but declined repair in at least one case due to mileage exceeding warranty.
Recalls/TSBs owners mention: Identified as a common issue by dealer technicians but no recall or warranty extension offered.
Rear-view mirror de-fogger fire
Exterior rearview mirror de-fogger activation causes flames to appear on windshield.
When: 91,300 miles
Symptoms owners cite: Flames visible from windshield when de-fogger activated; Fire ignition
Repairs/costs cited: Owner extinguished fire manually. No diagnosis or repair performed.
Recalls/TSBs owners mention: Owner did not notify manufacturer.
Chronic starting failure
Vehicle intermittently fails to start. Described by owner with electrical engineering background as electrical/electronic in nature.
When: Ongoing across vehicle ownership
Symptoms owners cite: Vehicle does not start reliably; Delayed or no engine cranking
Repairs/costs cited: Dealership visited three times; no permanent repair achieved. Electronic start system suspected.
Recalls/TSBs owners mention: No action taken despite multiple dealer visits.
Door lock failure
All four door locks stop functioning. First set replaced under warranty; second set failed within a month of replacement. Toyota states issue is not defective and charges $2,000 for replacement.
When: First failure within warranty period; second failure one month after warranty replacement
Symptoms owners cite: All four door locks inoperative; Repeated failure in replacement locks
Repairs/costs cited: First replacement covered under warranty. Second replacement denied—Toyota quoted $2,000 for parts and labor.
Recalls/TSBs owners mention: No recall issued. Toyota claims pattern is not abnormal and denies warranty coverage.
Soy-based wire chewing by rodents
Rats or mice attracted to soy-based wiring insulation in engine compartment. Chewed wiring causes engine to lose power and limits speed severely during highway driving.
When: Occurred suddenly during normal highway driving
Symptoms owners cite: Engine acceleration loss; Low-speed limp mode engagement; Engine failure risk; Safety hazard from loss of power in traffic
Repairs/costs cited: Mechanics repaired compromised wiring. Owner states Toyota provides no warning, help, or documentation of soy-wire rodent susceptibility.
Recalls/TSBs owners mention: None documented; owner states Toyota is aware of the issue but offers no guidance.
Radio and CD player overheating
Radio becomes inoperative. CD disc melts inside player. Issue persists across multiple replacement units.
When: Early in vehicle life; occurred between 1,000 and 9,000 miles
Symptoms owners cite: Radio non-functional; CD disc melted inside player; Tape deck malfunction
Repairs/costs cited: Radio, CD deck, and tape deck replaced multiple times. No repair resolved the root cause.
Recalls/TSBs owners mention: Manufacturer contacted but provided no assistance.
Instrument cluster illegibility in sunlight
Dashboard gauges and warnings cannot be read in bright sunlight. Described as design flaw present since manufacturing.
When: Since new
Symptoms owners cite: Instrument panel text and gauge numbers not visible in daylight; Safety risk from inability to read warnings and speed
Synthesized from 15 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 1 most recent
All four of my door locks stopped working within a month. All four were replaced under warranty. Now, all four locks have stopped working again within a month. Toyota said that they see nothing out of the ordinary with this. They expect me to pay $2,000. To replace 4 locks again. Toyota said that there is no recall for this item. *tr
Had electrical trouble with your 2007 Toyota Tundra?
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 electrical problem on the 2007 Toyota Tundra?
It's a meaningful issue. 15 complaints have been filed and the failure mode causes operational problems for owners. Repairs average $850.
At what mileage does the electrical typically fail?
Across the 14 complaints that reported odometer mileage, most electrical failures cluster between 35,000 and 150,250 miles, with the median around 91,300. A quarter of owners report trouble before 35,000; a quarter make it past 150,250. 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 $850 for electrical 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 electrical?
No active recalls currently cover electrical 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/2007/Toyota/Tundra.
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.