2004 Mitsubishi Montero problems

Common 2004 Mitsubishi Montero problems

The Mitsubishi Montero, particularly the 2004 model, has been reported to have several common problems based on complaints from owners. Here are some of the most frequently reported issues:

• Electrical Component Malfunction: The 2001 Montero has several different issues with certain electrical components malfunctioning. In one instance, the horn would honk even when the vehicle is parked. One owner has reported that their horn started blaring in the middle of the night. They said that the only way to stop it was to disconnect the vehicle’s battery or else it would be drained. Two owners have reported that their Montero’s alarm would activate in the middle of the night. Similarly, the alarm would refuse to deactivate until the battery was disconnected. One owner was told by his dealer that the cause of the issue is a worn-out metal ring inside the airbag housing, which acts as a switch when the horn is pressed. Other owners simply removed the horn’s fuse, which robbed the SUV of a horn but at least solved the problem. One owner was charged by his dealership around $1000 to fix the issue, though they didn’t specify the details of the repair.

• ABS/ASC Problems: The 2004 Montero LTD has been reported to have issues with the ABS/ASC system. The ABS/ASC lights come on if the vehicle is accelerated on an incline. The mechanic scanned the car and gave the following error codes: ABS/ASC/ASTC No. 35 - Engine FAIL TCL / HBB No. 35 - Engine FAIL SRS No. 21 - D-AB SQ Trouble 1 No. 22 - D-AB SQ Trouble 2 No. 45 - SRS Diag. Unit MFI. The mechanic cleared the codes, and the owner is thinking of driving the car for another week to see if anything lights up or changes. The owner is wondering if most of the problems are electrical or wiring in nature. For example, the air bag ones seem to be short circuits, and the CEL problem seems to be a cabling problem as well. This might also explain the lack of Cruise Control.

• O2 Sensor and Warm up TWC Failure: The 2004 Montero LTD has been reported to have issues with the O2 sensor and warm up TWC. The error codes P0155 - O2 sensor (Bank 2, S1) and P0421 - Warm up TWC (Bank 1) have been reported. These codes indicate that the O2 sensor and the warm up TWC are not functioning properly, which can cause issues with the vehicle's emissions and fuel efficiency.

• Coolant Thermostat Failure: The 2004 Montero LTD has been reported to have issues with the coolant thermostat. The error code P0128 - Coolant thermostat has been reported, indicating that the coolant thermostat is not functioning properly. This can cause issues with the vehicle's engine temperature and overall performance.

• Intake Manifold Tuning Valve Failure: The 2004 Montero LTD has been reported to have issues with the intake manifold tuning valve. The error code P0660 - Intake Manifold Tuning Valve has been reported, indicating that the intake manifold tuning valve is not functioning properly. This can cause issues with the vehicle's engine performance and fuel efficiency.

• Camshaft Position Sensor Failure: The 2004 Montero LTD has been reported to have issues with the camshaft position sensor. The error code P0340 - Camshaft Position Sensor has been reported, indicating that the camshaft position sensor is not functioning properly. This can cause issues with the vehicle's engine performance and fuel efficiency.

• Knock Sensor Circuit Failure: The 2004 Montero LTD has been reported to have issues with the knock sensor circuit. The error code P0325 - Knock Sensor Circuit has been reported, indicating that the knock sensor circuit is not functioning properly. This can cause issues with the vehicle's engine performance and fuel efficiency.

These issues can be frustrating for Montero owners, but it's important to note that not all vehicles of this model will experience these problems. If you are considering purchasing a Montero, it's a good idea to have any potential issues inspected by a qualified mechanic before making a decision.

Is A Mitsubishi Montero a reliable car?

Is the Mitsubishi Montero Reliable? According to MotorTrend and various forums, the Montero is overall a reliable SUV. However, there are certain model years that run into problems in their transmissions, braking, and engines, which are always certainly expensive to fix. These are the 2001 to 2002 Montero models.

What is the gas mileage on a 2004 Mitsubishi Montero Limited?

Based on data from 6 vehicles, 96 fuel-ups and 21,767 miles of driving, the 2004 Mitsubishi Montero gets a combined Avg MPG of 13.03 with a 0.82 MPG margin of error.

Is Montero Sport fuel efficient?

Fuel economy

During our testing, the midsize SUV was able to return about 7km/L in heavy city traffic and 17.7km/L in real-world highway conditions. In a mixed city and highway driving conditions, the Montero Sport was able to put up a fuel economy figure of 14.4km/L.

How many miles can a Mitsubishi Montero last?

I have a few customers well into the 300k mile range, and a lot of customers in the 200s. Really it all depends on how well the vehicle is maintained, but it is unusual to see any major failures even at this mileage provided the basic maintenance is done on time.

2004 Mitsubishi Montero car problems categorized by type of issue

After analyzing all complaints sent to the NHTSA and researching popular Mitsubishi Montero problems, we found that the most common problems with these 2023 model year vehicles are:

• Service brakes problems
• Hydraulic problems
• Steering problems
• Unknown or other problems

The graph below shows statistics for all 2004 Mitsubishi Montero vehicle components and the number of complaints received.