Other electrical problem on the 2005 Isuzu Ascender
When other electrical problem gets reported
Owners of the 2005 Isuzu Ascender report other electrical problem at a median of 50,000 miles. A quarter of the reports come in before 45,000 miles and a quarter after 65,000 miles, from 9 reports that carried an odometer reading.
A part like this is normally expected to survive 85,000 miles. It is the 2nd most-reported problem on this model year.
The mileage distribution
The reported range runs from 10,000 miles at the tenth percentile to 80,000 miles at the ninetieth, a spread of 69,534 miles across the middle 80% of reports.
A spread this wide points at use rather than design. Towing, climate, service history and city mileage all move a failure like this, so the median is a weak guide to any individual car.
22% of the dated reports were filed under 36,000 miles.
The whole distribution
| 10th | 25th | Median | 75th | 90th |
|---|---|---|---|---|
| 12,117 miles | 47,300 miles | 51,200 miles | 65,000 miles | 81,651 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
Putting it right typically runs $250–$2,000 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 3 model years of this car. It shows up earliest on the 2003, at a median of 10,000 miles, and latest on the 2004 at 80,000 miles.
By volume the 2004 carries the most reports, with 17; the 2005 has 11. 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.
While driving at slow speeds vehicle will cut off. You lose steering and brakes do not work well. First failure was 3 weeks after purchase. Vehicle was purchased new. Three dealerships have attempted to fix to no avail. Manufacturer was notified twice with no resolution. *nm
It took a while before the electrical issues to progress where they where verifiable with solid symptoms as in transmission faults and poor performance along with loss of communication to steering wheel controls, AC and blower failure, radio etc. The full extent of what is affected and how it will progress as it had to this point is unknown to me or service people. The wiring has been modified and the ignition has been replaced 3 times to try and resolve this issue, and the effects of modification did not work and what that will bring about is unknown at this time. I have notified manufacture, but after I learned of this site and looked at chevy trail blazer and isuzu ascender electrical issues ( same car ), it is clear to me that I am not alone and there is not a known fix for this hardware or possibly software issue. The vehicle has stranded my daughters, and guest 3 states away form home after wiring modification that was supposed to fix the electrical issue. Thankfully we got stranded in a town and not in the middle of desert on the way to colorado. *tr
My 2005 isuzu ascender (gm trailblazer) has crazy speedometer in it does not work first thing in the morning until I have driven a couple of miles. It has also just got stuck on 72 MPH and just stayed there even after turning it off. The vehicle has 52,000 miles on it and of course just out of warranty. *tr
Also reported on the 2005 Isuzu Ascender
Fuel gauge or level sensor failure
Instrument cluster or gauge failure
Other fuel system problem
Thermostat failure
Other lighting problem
Other speed control problem
How far this goes
Complaints are voluntary, so 11 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 other electrical problem happen on the 2005 Isuzu Ascender?
Across 9 owner reports that included an odometer reading, half were filed by 50,000 miles. A quarter were filed before 45,000 miles and a quarter after 65,000 miles. These are the mileages owners reported when they complained, not a prediction for any individual car.
How common is other electrical problem on the 2005 Isuzu Ascender?
11 reports have been filed with NHTSA, about 3.1 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