2004 Isuzu Ascender: Recalls, Problems & MPG
Here are the deets on the 2004 Isuzu Ascender: 1 recall, 64 owner complaints and up to 16 mpg combined.
Recalls
1 vehicle recall from the manufacturer. Repairs are free. Check your VIN to see if one is still open on your car.
Exterior lights Vehicle recall #05V198000 · 2005 · 286,478 vehicles
What's wrong: On certain trucks and sport utility vehicles, the driver wishing to signal a turn by moving the directional signal lever, (up or down) May cause the front marker/turn lights and rear turn lights to flash in a manner similar to hazard warning, rather than flashing on the desired side only.
Why it matters: The driver May not be able to clearly signal their intentions to turn, change travel lanes, or potentially warn others of an impaired vehicle operating condition increasing the risk of a crash.
The fix: Dealers will replace the suspect flasher modules with a new flasher module designed with sealed relays and more durable contact material inside of the relays free of charge. The recall began on August 4, 2005. Isuzu began mailing owner letters on August 4, 2005.
Most-reported problems
Owner complaints filed with NHTSA, by component. One complaint can list several components. 2 mention a fire, 0 injuries and 0 deaths were reported.
What owners describe
- Electrical (34): the most common themes are electrical failure (10), warning light on (8), door / lock issues (4).
- Fuel system (8): the most common themes are warning light on (4), leaks (2).
- Fuel & propulsion (7): the most common themes are leaks (3), warning light on (2).
- Exterior lights (6): the most common themes are electrical failure (3).
The 2004 Isuzu Ascender has 64 owner complaints, ranking #1 of 6 Ascender model years for complaints (1.9× the average Ascender year). Complaints peaked in 2015 (8 filed that year). The typical problem showed up when the car was about 6 years old, at a median of 80,000 miles. Neighboring years: 2003 (35 complaints, 5 recalls), 2005 (64 complaints, 1 recalls).
Engines & fuel economy (EPA)
| Engine | Transmission | Drive | City | Hwy | Comb. | Fuel |
|---|---|---|---|---|---|---|
| 5.3 L 8-cyl | Automatic 4-spd | Rear-Wheel Drive | 14 | 18 | 16 | Regular |
| 4.2 L 6-cyl | Automatic 4-spd | 4-Wheel or All-Wheel Drive | 14 | 19 | 16 | Regular |
| 4.2 L 6-cyl | Automatic 4-spd | Rear-Wheel Drive | 13 | 18 | 15 | Regular |
| 5.3 L 8-cyl | Automatic 4-spd | 4-Wheel or All-Wheel Drive | 13 | 17 | 14 | Regular |
Want the full repair deets? Get the factory manual.
Recall and complaint data tells you what goes wrong. A service manual tells you how to fix it: torque specs, wiring diagrams, fluid capacities and step-by-step procedures for the 2004 Isuzu Ascender.
Closest thing to the factory manual for most years. Pay once, keep it.
Most $25–$78, one-timePro-shop repair procedures, wiring diagrams and TSBs for your exact car.
From $19.99/mo · $39.99/yrOEM procedures, specs and recall/TSB info, the same source many shops use.
From $19.99/mo · $59.99/yrStep-by-step photos written from a real teardown. Great for first-timers.
Books ~$30–$40 · AllAccess $34.99/moHeads up: we may earn a commission if you buy through these links, at no extra cost to you. Prices checked 2026-10 and can change. We never host or link to pirated manuals. Disclosure
FAQ
Does the 2004 Isuzu Ascender have any recalls?
Yes. NHTSA lists 1 vehicle recall for the 2004 Isuzu Ascender. Recall repairs are free at any dealer, no matter how old the car is. Check your VIN at nhtsa.gov/recalls.
What are the most common 2004 Isuzu Ascender problems?
Owners have filed 64 complaints with NHTSA. The most-reported areas are electrical (34), fuel system (8), fuel & propulsion (7).
What gas mileage does the 2004 Isuzu Ascender get?
EPA ratings run up to 16 mpg combined (5.3 L, Automatic 4-spd), across 4 engine and transmission combos.
Where can I get a 2004 Isuzu Ascender repair manual?
eManualOnline sells downloadable manuals, Mitchell 1 DIY and ALLDATAdiy sell online access to factory repair data, and Haynes sells printed guides and online access. Pick a download if you want to keep it, or a subscription for wiring diagrams and TSBs.