This is a Technical Bulletin sent to dealers. This bulletin provides dealers with a basic description of the hands-free systems used in Mitsubishi built vehicles. The bulletin covers components and operation, system layouts showing the differences in Japan built and U.S. built vehicles, diagnostic flow charts, a list of commonly used acronyms and terms, and part numbers. The bulletin also provides a comprehensive Hands-free/FUSE Information Sheet to guide the service writer in getting complete and accurate details from the customer. With this information, dealer personnel can answer questions and conduct an efficient diagnosis to resolve customer concerns as quickly as possible.
full bulletin at NHTSA ↗2009 Mitsubishi Lancer electrical problems
severe 17 complaints filed with NHTSA · avg repair $850 · see electrical across all vehicles →
Failure mileage
Complaints
17
Recalls
0
Avg fix
$850
1fire
When does it fail?
Of the 17 electrical complaints filed for the 2009 Mitsubishi Lancer, here's the actual mileage breakdown — failures cluster heaviest at 50,000-75,000 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 6 model years of Mitsubishi Lancer we track for electrical problems, this one carries the most owner complaints on file — 17.
No new NHTSA electrical complaint has been filed on this vehicle in over 7 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.
This is a Technical Service Bulletin sent to dealers. This bulletin updates the Chassis Electrical section of the affected Service Manuals to update diagnostics for ETACS-ECU CAN timeout diagnostics with DTC U0141.
full bulletin at NHTSA ↗This is a Technical Service Bulletin sent to dealers. The bulletin instructs dealers to confirm a list of specific Diagnostic Trouble Codes (DTCs) if vehicle experiences the following symptoms in cold weather: the check engine light illuminating with a limited vehicle speed (failsafe mode), or the engine does not restart after driving a short distance and stopping the engine for a few minutes. Once symptoms and DTCs are confirmed, dealers should replace the following relays with anti- freezing types: ETV, A/T (CVT), injector, and starter.
full bulletin at NHTSA ↗This is a Technical Service Bulletin sent to dealers. It provides dealers instructions for reprogramming the ETACS ECU with updated software to resolve the issue on certain vehicles experiencing dome light flickering when the vehicle's doors are opened or dome light is switched to "ON."
full bulletin at NHTSA ↗This is a Technical Service Bulletin, sent to dealers, providing updates to the Chassis Electrical section of the affected Service Manuals, to provide replacement instructions when installing the new ETACS ECU to replace the old ETACS ECU.
full bulletin at NHTSA ↗Source: NHTSA manufacturer communications. Bring the bulletin number to your dealer or shop.
The failure pattern owners describe
Owners of 2009 Lancers describe recurring electrical failures, with the ECU emerging as a chronic problem. Brake lights fail while tail lights work normally, and some vehicles continue draining brake lights even after the ignition is off. Headlights also flicker or shut down entirely while driving—a safety hazard at highway speeds. Mitsubishi issued recall SR-15-002 for the ECU, but multiple owners report the dealership refused coverage because their vehicles have a different ECU part number (8637C096 instead of the recalled 8637A826), despite experiencing identical failures. The replacement ECU costs roughly $870 and requires dealer programming, a monopoly that leaves out-of-warranty owners stuck paying full freight.
Audio amplifiers under the driver's seat in Sun and Sound package vehicles have smoked and sparked during operation, with one failing again just one week after dealership replacement. The underlying wiring remains unchanged, suggesting a design defect rather than the component itself.
Other owners report Bluetooth modules draining batteries (requiring jump-starts after five days), blower motors failing to defrost windshields, electronic key systems locking them out of the ignition, and engine shutdown on highways requiring 20-minute cool-downs. Dealership diagnostics have been unable to pinpoint causes in several cases. Recall eligibility confusion is widespread—some owners have the exact recalled part but were denied coverage because their VIN supposedly wasn't included.
Failure modes owners describe
ECU malfunction causing brake light failure
ECU fails, shutting down brake light function while tail lights remain operational. Some vehicles continue to drain brake lights even after engine shut-off. Multiple owners report brake lights failed to illuminate while driving. One owner's vehicle sat undiagnosed at dealership; another's ECU has part number 8637C096, excluded from recall SR-15-002 which covers part number 8637A826. Replacement ECU (8637C496) costs approximately $870 and requires licensed dealer programming.
When: Reported at various mileages; one confirmed at 70,000 miles; some without mileage stated
Symptoms owners cite: Brake lights non-functional while tail lights operate; Brake lights remain illuminated after ignition off; Headlights turn off intermittently while driving; Low-beam headlights turn on and off independently at night
Codes mentioned: 8637C096, 8637A826, 8637C496
Repairs/costs cited: Replacement ECU cost approximately $870; requires licensed dealer programming. One replacement amplifier installed but failed again within one week.
Recalls/TSBs owners mention: Recall SR-15-002 exists but only covers part number 8637A826; vehicles with part number 8637C096 refused coverage. Dealership refused to supply part numbers as policy. NHTSA Campaign 15V232000 (Electrical System) does not include all affected VINs. One owner's vehicle confirmed ineligible for recall despite experiencing same failure.
Audio amplifier smoking and sparking
Amplifier mounted under driver's side seat in vehicles with Sun and Sound package ignites with smoke and sparks. Occurs repeatedly even after dealership replacement. Smoking stops when radio powered off but resumes when radio powered on. Owner suspects underlying wiring defect creating fire hazard.
When: One week after initial dealership replacement; recurred during driving
Symptoms owners cite: Amplifier smoking and sparking; Amplifier failure after dealership replacement; Smoke coming from underneath driver's side seat; Speakers cease functioning after amplifier failure
Repairs/costs cited: Dealership replaced amplifier; failed again one week later. Dealership refused to examine vehicle again without $120 diagnostic fee.
Bluetooth module battery drain
Bluetooth connection module integrated into vehicle drains battery to point where vehicle requires jump start after sitting for five or more days. Failure recurred multiple times. Independent mechanics unable to diagnose; dealership identified Bluetooth module as cause. Module removal resolved issue.
When: 70,000 miles
Symptoms owners cite: Vehicle requires jump start after sitting unused for five days or more; Failure recurred several times; Battery failure persisted after battery replacement
Repairs/costs cited: Initial diagnosis: battery replacement. Failure persisted. Second independent mechanic could not determine cause. Dealership diagnosed defective Bluetooth module and removed it.
Recalls/TSBs owners mention: Manufacturer notified of failure.
Blower motor failure
Blower motor fails, preventing windshield defrosting and front cabin heating. Some vehicles have recalled blower motor part numbers but owners report Mitsubishi claims their VIN was not included in recall SR-15-003 dated June 2015, despite the defective motor bearing recalled part number. One vehicle was manufactured June 2008 (early 2009 model) and owner believes Mitsubishi missed early production vehicles.
When: Unspecified; one vehicle manufactured June 2008
Symptoms owners cite: Blower motor inoperative; Front windshield cannot be defrosted; No front cabin heating
Repairs/costs cited: Owner purchased replacement blower motor out-of-pocket; has receipt and defective motor marked with recalled part number.
Recalls/TSBs owners mention: Recall SR-15-003 (June 2015) exists for blower motor; manufacturer denied coverage for at least one vehicle despite motor bearing recalled part number. Manufacturer stated vehicle was not part of recall.
Electronic key system failure
Electronic key system fails; key cannot be inserted into ignition switch. Vehicle taken to dealership multiple times. Dealership reprogrammed key computer system multiple times without resolving failure.
When: Between 55,000 and 56,000 miles
Symptoms owners cite: Key cannot be inserted into ignition switch; Electronic key system malfunction
Repairs/costs cited: Dealership reprogrammed key computer system multiple times; failure persisted.
Intermittent starting failure
Vehicle fails to start on several occasions, typically in mornings. Engine cranks normally but does not turn over. Issue began after vehicle had been in service for several months without prior problems. Dealership computer diagnostic found nothing.
When: Several months after initial vehicle purchase (one example: purchased April 2009)
Symptoms owners cite: Vehicle will not start; Normal engine cranking without ignition; Intermittent failure, typically in mornings; Multiple attempts required to achieve starting
Repairs/costs cited: Dealership ran vehicle through computer diagnostics; no fault codes found.
Engine RPM fluctuation and stalling at idle
Engine RPMs fluctuate while idling and vehicle appears to be stalling. Vehicle also experiences poor acceleration from stopped position. Blower also non-functional in same vehicle. Failure cause not diagnosed or repaired.
When: 50,000 miles
Symptoms owners cite: Engine RPM fluctuates at idle; Engine appears to be stalling; Poor acceleration from standing start
Repairs/costs cited: Cause not diagnosed or repaired.
Recalls/TSBs owners mention: Manufacturer notified of failure.
Uncontrolled engine shutdown on highway
Vehicle decelerates and shuts down without driver input while on highway. Requires 20-minute cool-down period before operation can resume. Vehicle cannot operate in traffic for more than two hours before shutting down. Dangerous condition creating traffic hazard.
When: Unspecified mileage
Symptoms owners cite: Vehicle slows down on highway without driver input; Vehicle shuts down on highway; Vehicle shuts down after two hours of traffic driving; Requires 20-minute cool-down to restart
Cruise control intermittent operation
Cruise control turns on and off but will not hold set speed. Occurs alongside non-functional brake lights.
When: Unspecified mileage
Symptoms owners cite: Cruise control turns on and off intermittently; Cruise control will not set speed
Synthesized from 17 NHTSA owner complaints — unverified consumer allegations, summarized for patterns. The verbatim filings appear below.
What owners are reporting 2 most recent
The ECU is bad and the headlights will turn off while driving there is many complaints on the internet about this but they refuse to acknowledge its an issue and want near 1000 $ to fix the issue. We have had the light turn off while driving several time causing my wife to panic and causing alarm that could have resulted in an accident
Tl* the contact owns a 2009 Mitsubishi lancer. The contact stated that the electronic key system failed and the key could not be inserted into the ignition switch. The vehicle was taken to the dealer several times for the failure and the dealer reprogrammed the key computer system, but the failure was not corrected. The failure mileage was 55,000 and the current mileage was 56,000.
Had electrical trouble with your 2009 Mitsubishi Lancer?
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 2009 Mitsubishi Lancer?
It's a meaningful issue. 17 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 12 complaints that reported odometer mileage, most electrical failures cluster between 50,000 and 106,000 miles, with the median around 60,000. A quarter of owners report trouble before 50,000; a quarter make it past 106,000. 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 $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/2009/Mitsubishi/Lancer.
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.