Control module (ECM/PCM/BCM) failure on the 2005 Volkswagen Jetta
1 crash 1 of the 5 reports for this failure mention a crash, a fire, an injury or a death. Those are the owner's words on the complaint form, not a verified finding, and one report can mention more than one.
Only 4 reports for this mode came with an odometer reading, which is too few for percentiles to mean anything. The page is here because someone linked to it; treat the figures as anecdotes, and see the full report for this year instead.
When control module (ecm/pcm/bcm) failure gets reported
There are 5 reports of control module (ECM/PCM/BCM) failure on the 2005 Volkswagen Jetta, 4 with a mileage attached. That is too few to place the failure on the odometer with any confidence.
A part like this is normally expected to survive 92,000 miles. It is the 20th most-reported problem on this model year.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| — | — | 9,300 miles | — | — |
Read the 10th percentile as “one report in ten arrived this early”. Exact figures are shown in this table because it is the table of record; everywhere else on the site they are rounded to the precision the sample can carry.
What a percentile can and cannot tell you here
These five numbers describe the readings owners gave, in order. The median is the middle one: half the reports arrived below it. The 10th and 90th are the edges of the bulk of the distribution, and the distance between them is the part worth reading. A tight spread — say 70,000 to 95,000 miles — points at something that wears out on a schedule, and the schedule is knowable. A wide one, 20,000 to 190,000, points at a fault that hits some cars and never troubles others, which means the mileage on the listing in front of you tells you very little about your odds.
What these figures are not is a survival curve. Every reading here comes from a car whose owner filed a complaint, so the sample contains only failures: it cannot say what share of the fleet made it past 150,000 miles untouched, because those owners had nothing to report. Nor is the mileage the moment of failure — it is the odometer reading as recalled at the time of filing, which may be weeks later and is sometimes rounded to the nearest ten thousand by the person typing it.
Percentiles are shown at all only once 8 readings exist for the vehicle and mode. Below that the middle of a handful of numbers is noise wearing a decimal point, so the figures are withheld rather than dressed up.
What happens, and what it costs
Of these reports, 1 a crash is mentioned. Owners write their own complaints and the agency does not verify them, so read this as what the reports say happened rather than as a confirmed count.
Putting it right typically runs $700–$3,000 at an independent US shop. That range is an editorial estimate held in this site's failure-mode catalogue, not a figure from NHTSA, and it is a repair cost rather than a diagnosis cost.
The same failure on other years
The same failure is reported on 16 model years of this car. It shows up earliest on the 2019, at a median of 5,000 miles, and latest on the 2000 at 115,000 miles.
By volume the 2009 carries the most reports, with 61; the 2005 has 5. A mode that appears across most years of a model is usually a design choice rather than a bad batch.
If one year stands out to the left, that is the year to avoid; if the whole line sits at a similar mileage, this is wear rather than a defect in one production run.
Tick median reported mileage Solid middle half of reports Faint 10th to 90th percentile Colour how bad the failure is when it happens
What owners wrote
Verbatim from NHTSA complaint narratives, trimmed for length. The mileage is the one the owner gave.
I was making a left hand turn and for no reason whatsoever the driver and passenger airbags deployed. Following the deployment of the airbags, my hands were thrown off the steering wheel, causing me to lose control of the vehicle. The vehicle then proceded to go straight up onto a curb causing the entire passenger side of the vehicle to be damaged. The car was not drivable
Dt*: the contact stated when the accelerator pedal is depressed, after being stopped at a red light, the vehicle will move for a split second then stop. If the vehicle is turned off for 15 minutes, it will go for 10 miles. This is an intermittent problem. The vehicle has been towed to the dealership four times. The dealership is unable to determine a problem, but has replaced multiple components. The dealership has reset the codes, replaced the throttle body control valve module, the throttle position sensor, the wires connecting the ECM, the accelerator pedal, 18 connectors, the wires to the pedal, bolts, and installed a harness. These efforts have not repaired the problem and the vehicle is currently at the dealership.
Auto headlamps malfunction intermittently when the auto engine is started. All incidences have occurred after auto was in contact with water, such as during a rain storm or a car wash. The auto indicator light for headlamp malfunction is lit and different headlamp bulbs are out, including the day running lights and head lights. On one occasion, all headlamps malfunctioned at once. Auto was purchased on 4/26/05. First incident was reported on 5/20/05. The electronic control module was replaced by the dealer on 5/26/05, but problem continued since the replacement. The dealer service center has not attempted to locate the source of the problem since 5/26/05. The dealer requested the auto be returned when the problem was visible to them. I returned the auto to the dealer on 9/25/06 to show the service advisor the problem which was documented. They did not attempt to locate the source of the problem on this day and made an appointment two weeks later. On 10/10/06 the auto was returned for repair, however, I was informed on 10/12/06 that because the technician could not duplicate the problem, they would not attempt to fix it. I…
Also reported on the 2005 Volkswagen Jetta
Other powertrain problem
Other engine problem
Timing chain, belt or tensioner failure
Other electrical problem
Wiring harness or short circuit
Other body or interior problem
How far this goes
This page is kept out of search results because 5 reports is not enough to publish percentiles from. It stays reachable because somebody looking at this exact car would rather see the reports than be told there are none.
Complaints are voluntary, so 5 is a floor and not a count of affected cars. Mileages are typed in by owners and cluster on round numbers. And the mode itself is assigned by software reading the complaint text, which is reliable in bulk and fallible one report at a time.
Questions this page answers
At what mileage does control module (ecm/pcm/bcm) failure happen on the 2005 Volkswagen Jetta?
Across 4 owner reports that included an odometer reading, half were filed by 10,000 miles. A quarter were filed before — and a quarter after —. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is control module (ecm/pcm/bcm) failure on the 2005 Volkswagen Jetta?
5 reports have been filed with NHTSA, about 0.3 per 1,000 vehicles. Complaints are voluntary, so this is a floor rather than a count of affected cars.
What this is and is not. These are the mileages at which owners chose to complain to a federal agency, which is not the same as the mileage at which the part fails on every car. It skews toward failures that happened outside warranty, cost real money, or frightened someone. It is still the only public dataset that carries failure mileage at all, and the shape of a few hundred readings is informative even when a single one is not. Methodology · JSON · this failure on other cars
Source Owner complaints and recall records published by the US National Highway Traffic Safety Administration, model years 1996–2027 Figures rebuilt Published by AtWhatMileage How every figure is computed