2003 Infiniti M problems
The Infiniti M is a line of mid-size luxury (executive) cars from the Infiniti luxury division of Nissan. From 2013 (model year 2014) on it has been marketed as the Infiniti Q70, reflecting the company's new naming scheme.
The first iteration was the M30 Coupé/Convertible, which were rebadged JDM Nissan Leopard. After a long hiatus, the M nameplate was used for Infiniti's mid-luxury sedans (executive cars). First was the short-lived M45 sedan, a rebadged version of the Japanese-spec Nissan Gloria. The next generations, the M35/45 and M37/56/35h/30d, became the flagship of the Infiniti brand and are based on the JDM Nissan Fuga.
First generation (1989–1992)
The Infiniti M30 was a 2-door coupé based on the Japanese market Nissan Leopard (chassis code F31). It was launched in 1989 for the 1990 model year as a luxury coupe alternative to the Infiniti Q45, and was intended to be an alternative to the Lexus SC and Acura Legend coupe for the North American market.
Unlike its competitors that were designed with the American market in mind and were launched as brand-new models, the M30 was based on a somewhat dated platform that was originally designed for the Japanese market; when the Leopard was imported to the United States, few changes were made to the exterior but the interior was revised to better suit American tastes; a leather interior was standard in the M30, and several features in the Leopard such as a center-mounted television screen and a digital instrument cluster weren't available in the M30 as those features were perceived as gimmicks in western car markets.
The M30's angular design aesthetics and on-road performance were viewed as outdated, especially considering a redesigned Acura Legend coupe was launched in 1991. The interior came in for criticism for its outdated ergonomics and lack of room. While the Japanese-market Leopard had received a new dashboard along with the 1988 facelift, economics precluded making a left-hand-drive version of the new dashboard and the M30 was instead fitted with the LHD version of the R31 Skyline's rectilinear dashboard, first presented in 1985.
The M30 made up for these deficiencies in its somewhat lower price; whereas the 1990 Acura Legend coupe started at $27,325 before options and the 1990 BMW 325i started at $24,650 before options, the M30 started at $23,500, and had no factory options, per Infiniti's pricing structure used at the time. Dealerships offered an in-car cellular telephone and in-dash CD player as optional accessories, amongst other items.
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Common 2003 Infiniti M problems
The 2003 Infiniti M is known for several common problems, primarily related to the electrical system, transmission, and engine.
- Transmission Problems: Transmission issues are also common in the 2003 Infiniti M, with some owners reporting problems such as slipping, jerking, and hesitation. These issues can be expensive to fix, so it's essential to address them promptly.
- Steering Problems: Some owners have reported experiencing steering problems, such as stiffness, vibration, and noise. These issues can be caused by several factors, including worn-out steering components or a problem with the power steering system.
- Electrical System Problems: Electrical system problems are also common in the 2003 Infiniti M, with some owners reporting issues such as flickering lights, electrical shorts, and malfunctioning gauges. These issues can be caused by several factors, including a faulty alternator, battery, or wiring.
- Brake Problems: Some owners have reported experiencing brake problems, such as squeaking, grinding, and pulsating. These issues can be caused by several factors, including worn-out brake pads, rotors, or calipers.
- Engine Stalling: Some owners have reported experiencing engine stalling, which can be caused by several factors, including a faulty ignition coil, fuel pump, or crankshaft position sensor.
- Rear-View Camera Display Errors: Some owners have reported experiencing rear-view camera display errors, which can be caused by several factors, including a faulty camera or wiring.
- Tire Problems: Some owners have reported experiencing tire problems, such as uneven wear, balding, and blowouts. These issues can be caused by several factors, including improper inflation, misalignment, or a problem with the suspension system.
- Forward Collision Avoidance Errors: Some owners have reported experiencing forward collision avoidance errors, which can be caused by several factors, including a faulty sensor or software issue.
It's important to note that while these issues are common, not all 2003 Infiniti M vehicles will experience them. Regular maintenance and prompt attention to any issues can help prevent or address these problems.
What years to avoid Infiniti M45?
Summary: NISSAN IS RECALLING CERTAIN MODEL YEAR 2003-2004 INFINITI M45 VEHICLES MANUFACTURED FROM MARCH 7, 2002, THROUGH JUNE 3, 2004. DUE TO A CIRCUIT BOARD FAILURE, THE FUEL GAUGE MAY READ A FUEL LEVEL HIGHER THAN ACTUALLY EXISTS. AS A RESULT, THE VEHICLE MAY RUN OUT OF GAS WITHOUT NOTICE.
What is a common problem with Infiniti G35?
The G35 has been reported to develop several issues including a faulty crankshaft angle sensor, a rattling timing chain, and brake light problems, among other things. Overall, the G35 doesn't have any big issues for it to be actively avoided.
Are old INFINITI cars reliable?
RepairPal ranks the INFINITI brand 16th out of 32 best car brands, with a 3.5 out of five overall reliability rating. INFINITIs visit the shop 0.7 times per year on average, with a 10% chance the repairs are severe. The average annual repair cost is $638, lower than the $652 average repair costs across all models.
Are INFINITI M45 reliable?
M45 is an excellent value!
The car offers tremendous power combined with luxury. It is also very reliable.
2003 Infiniti M car problems categorized by type of issue
After analyzing all complaints sent to the NHTSA and researching popular Infiniti M problems, we found that the most common problems with these 2023 model year vehicles are:
- Fuel system problems
- Gasoline problems
- Electrical system problems
- Engine and engine cooling problems
The graph below shows statistics for all 2003 Infiniti M vehicle components and the number of complaints received.
2003 Infiniti M complaints
The NHTSA has received 2 complaints about various vehicle components related to the 2003 Infiniti M.
ENGINE AND ENGINE COOLING,FUEL SYSTEM, GASOLINE,ELECTRICAL SYSTEM PROBLEM
- Date Of Incident: 2012-01-27
- VIN: JNKAY41E63M
- Components: ENGINE AND ENGINE COOLING,FUEL SYSTEM, GASOLINE,ELECTRICAL SYSTEM
- Summary: CAR SHOWED OVER HALF TANK OF GAS THEN BEGAN SPUDDERING AND STALLED IN THE MIDDLE OF TRAFFIC. ADDED GAS, CAR STARTS AND RUNS FINE. *TT
FUEL SYSTEM, GASOLINE,ELECTRICAL SYSTEM PROBLEM
- Date Of Incident: 2011-08-18
- Components: FUEL SYSTEM, GASOLINE,ELECTRICAL SYSTEM
- Summary: PURCHASED CAR FROM MARIN INFINITI IN AUGUST, 2011. NEXT DAY CAR STALLED DRIVING IN A 50 MPH ZONE AND HAD TO BE COASTED TO SIDE OF THE ROAD ACROSS TRAFFIC. FUEL GAUGE WAS FOUND TO BE INACCURATE, GAS TANK WAS EMPTY WHEN GAUGE STATED 7/8 FULL. MARIN INFINITI WAS UNABLE TO ASSIST. FUEL SENDING UNIT WAS REPLACED FOR $400. GAS GAUGE CONTINUED TO BE INACCURATE, GIVING FALSE READINGS AND EVEN INCREASING AND DECREASING READINGS AS THE CAR WAS DRIVEN. MY MECHANIC CALLED A LOCAL INFINITI DEALER WHO STATED THIS WAS A KNOWN PROBLEM AND COULD ONLY BE CURED WITH REPLACING THE DASH INSTRUMENT CLUSTER FOR $600.CAR IS CURRENTLY IN THE SHOP FOR THIS REPAIR. CONTACT WITH OTHER INFINITI M45 OWNERS PROVES THIS IS A KNOWN DEFECT BY THE MANUFACTURER WHICH, DEPENDING ON WHAT PERSONNEL IS ARE CONTACTED AT NISSAN/INFINITI, HAS SOMETIMES BEEN COVERED UNDER WARRANTY AND SOMETIMES THE MANUFACTURER'S REPS DENY THE ISSUE, FORCING THE PUBLIC TO PAY FOR MANUFACTURER'S DEFECTS. *TR
Additional sources
More sources of information about 2003 Infiniti M problems:
Infiniti M reliability -- let's get better stats - Nissan Forum | Nissan ...
Dec 1, 2006 ... ... 2003 /2004 M45's in there yet ... so no info yet! Z. Our M35/45 Forums: M35/45 at NICO, M35forum, and M45forum! Infiniti Service Manuals are ...
Q&A: 2003 Infiniti I35 Luxury - Common Problems & Bose Radio ...
Oct 23, 2020 ... Hi! My name is AutoDoc1. What's your name? I'm sorry that you're having trouble with your vehicle but don't worry though, ...
Buyin 2003 G35. Problems? - G35Driver - Infiniti G35 & G37 Forum ...
Jan 8, 2012 ... What are the most common problems with a 2003 G35? ... I'm new here. Here's my new to me 04' G35 ... Infiniti G35, located here: http://www ...
Is a 2003 Infiniti G35 reliable? - Quora
Aug 17, 2015 ... Although the engine and drivetrain enjoy Nissan products reputation for reliability; the 2003 showed problems with the steering rack unit ( ...
2004 g35x common problems? - G35Driver - Infiniti G35 & G37 ...
Jul 31, 2011 ... G35 Sedan V35 2003-06 - 2004 g35x common problems? - looking into buying a 2004 g35x but was wondering what some of the common problems are?
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