The 2003 Nissan Murano was the first-year launch of Nissan's unibody crossover, pairing the solid VQ35DE V6 with the CVT transmission—a combination that makes or breaks ownership. The engine itself is generally robust, but catastrophic transmission failures and less-common but serious internal engine damage define the high-mileage risk profile.
Symptoms: shuddering or lurching during acceleration, whining or grinding noise from transmission, hesitation when accelerating from stop, transmission slipping or loss of power, check engine light with P0730 or P0732 codes
Fix: Nissan's early CVTs are notorious for internal belt/pulley wear and valve body failures. Repair means replacement—rebuilt CVT with installation runs 12-16 labor hours. Fluid changes every 30k miles help but don't guarantee survival. This is the number-one reason Muranos get junked.
Estimated cost: $3,500-5,500
CVT Transmission Cooler Failure and Cross-Contamination
Fix: The CVT cooler is integrated into the radiator; when it ruptures internally, coolant and CVT fluid mix, destroying both systems. Requires radiator replacement, complete CVT fluid flush (or CVT replacement if contamination sat), coolant system flush. If caught early: 6-8 hours. If CVT is damaged: add transmission replacement labor and cost.
Symptoms: excessive oil consumption (quart every 500-1000 miles), blue smoke from exhaust on startup or acceleration, knocking or ticking noise from lower engine, loss of compression, metal shavings in oil
Fix: While the VQ35 is usually durable, 2003-2004 models see occasional piston ring land failures or bearing wear from inadequate oil changes or extended intervals. Repair means engine rebuild or short block replacement—30-40 labor hours for full removal/reinstall. Often totals the vehicle given age and mileage.
Estimated cost: $4,500-7,000
Transmission Mounts Collapsing
Common · medium severity
Typical onset: 70,000-110,000 mi
Symptoms: clunking or banging when shifting into drive or reverse, excessive vibration at idle, engine/trans visibly sagging when viewed from front, harsh engagement into gear
Fix: The CVT is heavy and the rubber mounts deteriorate from heat cycling. Front and rear mounts fail most often. Replacement is straightforward—3-4 hours for both mounts with proper support equipment. Cheap fix that makes a huge difference in refinement.
Estimated cost: $400-700
Alternator Failure
Occasional · medium severity
Typical onset: 100,000-150,000 mi
Symptoms: battery warning light illuminated, dimming headlights or interior lights, electrical accessories cutting out, no-start condition with dead battery, whining noise from alternator pulley
Fix: The VQ35DE alternator is tucked low and forward, exposed to road splash. Bearings and voltage regulators fail. Replacement is 2-3 hours—not terrible but not easy due to access. NHTSA recall covered some units but many fail outside recall scope.
Estimated cost: $500-800
Fuel Pump and Fuel Level Sender Failure
Occasional · medium severity
Typical onset: 90,000-140,000 mi
Symptoms: fuel gauge reading incorrectly or erratically, hard starting or extended cranking, stalling at idle or low speeds, loss of power under acceleration, check engine light with fuel trim or fuel system codes
Fix: Fuel pump assemblies fail from wear and contamination; level senders commonly read wrong even when pump works. Tank must be dropped for access—4-5 hours labor. Use OEM or quality aftermarket; cheap pumps fail quickly.
Estimated cost: $600-1,000
Owner tips
Change CVT fluid every 30,000 miles with Nissan NS-2 fluid—it's expensive but mandatory for any hope of longevity beyond 100k
Inspect radiator/transmission cooler for leaks annually; catch cross-contamination before it kills the CVT
Use quality synthetic oil and change every 5,000 miles—extended intervals accelerate VQ35 ring wear
Budget $500-1,000/year for deferred maintenance items after 100k miles; these are not Honda-reliable
Buy only if under 80k miles with documented CVT fluid changes, and budget for transmission replacement—it's when, not if; otherwise walk away.
AI-assisted summary drawn from NHTSA recall data, our labor-times database, and platform knowledge. Not a substitute for a pre-purchase inspection on a specific vehicle.
Fitment notes: First generation Murano; battery located in engine compartment
As an Amazon Associate, OLP earns from qualifying purchases — how we link. This never changes the specs we publish.
Every control module on the 2003-2007 Nissan Murano — where it lives, replacement time, and what it takes to program a replacement. Modules marked dealer / factory tool won't work after a part swap alone — budget for programming.
⚠️ Odometer programming required to transfer mileage. VIN and configuration must match vehicle.
Sonar Control Unit (SONAR)0.6 hr R&Rrelearn only +0.2 hrwith rear parking sensors▸ programming details
📍 Behind rear bumper, driver side, above hitch area
🔧 CONSULT-II or self-calibration
⚠️ 2006-2007 models only. Self-calibration available through button sequence on control panel.
Fuel Pump Control Module (FPCM)0.5 hr R&Rno coding
📍 Under rear seat cushion, above fuel tank
⚠️ Controls fuel pump relay and monitors fuel level sender. Common failure point causing no-start.
Aftermarket tool coverage varies by software version and vehicle build — treat "aftermarket tool" rows as "usually possible" and verify against your tool maker's coverage list before promising a customer. Spot a wrong location or hour? Tell us — corrections ship fast here.
NISSAN IS RECALLING 362,891 MY 2003-2007 MURANO VEHICLES. THE INTAKE AIR DUCTS, WHICH ARE CONNECTED TO THE INTERMEDIATE RESONATOR IN THE AIR INTAKE SYSTEM OF THE ENGINE, MAY SEPARATE FROM THE RESONATOR WITH ENGINE MOVEMENT. THIS SEPARATION OCCURS DUE TO THE PREMATURE AGING OF THE MATERIAL USED IN THE INTAKE AIR DUCTS WHICH CAUSES EXCESSIVE SHRINKING.
Consequence: ENGINE MAY STALL INCREASING THE RISK OF A CRASH.
Remedy: DEALERS WILL INSPECT AND REPLACE/REPAIR THE APPROPRIATE COMPONENTS FREE OF CHARGE. THE RECALL BEGAN ON SEPTEMBER 24, 2009. OWNERS MAY CONTACT NISSAN AT 1-800-647-7261.
SEAT BELTS:REAR/OTHER · 06V048000
2006-02-13
ON SOME SPORT UTILITY VEHICLES, IN CERTAIN HIGH SPEED FRONTAL CRASHES, THE WEBBING OF A REAR OUTBOARD SEAT BELT MAY CONTACT THE REAR SEAT BACK HINGE WHERE IT CAN BE CUT BY THE SHARP EDGE OF THE METAL PORTION OF THE HINGE.
Consequence: IF THE WEBBING IS COMPLETELY SEPARATED, IT CAN INCREASE THE RISK OF INJURY TO AN OCCUPANT IN A CRASH.
Remedy: DEALERS WILL INSTALL PROTECTORS OVER THE WEBBING OF THE REAR SEAT BELTS. THE RECALL BEGAN ON MARCH 20, 2006. OWNERS MAY CONTACT NISSAN AT 1-800-647-7261.
ON CERTAIN SPORT UTILITY VEHICLES, DUE TO THE LOCATION OF THE FORWARD EDGE OF THE FUEL TANK, IN THE EVENT THAT A VEHICLE FRONT TIRE RUNS OVER A SMALL, SHARP OBJECT IN THE ROAD, CATCHES IT AND PROPELS IT TOWARDS THE REAR OF THE VEHICLE, IT MAY STRIKE AND PUNCTURE THE FUEL TANK.
Consequence: A PUNCTURED TANK COULD INCREASE THE RISK OF A FIRE.
Remedy: DEALERS WILL INSTALL PROTECTORS IN FRONT OF THE TANK FREE OF CHARGE. THE RECALL BEGAN ON MARCH 20, 2006. OWNERS MAY CONTACT NISSAN AT 1-800-647-7261.
ON CERTAIN SPORT UTILITY VEHICLES, THERE IS A POSSIBILITY THAT A WIRE BREAKING INSIDE THE ALTERNATOR COULD STOP THE BATTERY FROM CHARGING.
Consequence: IF THIS HAPPENS, THE CHARGER WARNING AND BRAKE WARNING LAMPS WILL IMMEDIATELY COME ON AND THE BATTERY WILL BEGIN TO DISCHARGE. AFTER A SHORT TIME, THE ENGINE WILL GO INTO A "FALL SAFE" CONDITION WHICH WILL LIMIT VEHICLE SPEED. THE ENGINE WILL STOP RUNNING WHICH COULD RESULT IN A CRASH.
Remedy: DEALERS WILL INSPECT AND REPLACE THE ALTERNATOR WITH A NEW VERSION WHICH HAS BEEN MODIFIED TO PREVENT MOVEMENT OF THE COIL. THE RECALL BEGAN ON AUGUST 1, 2005. OWNERS MAY CONTACT NISSAN AT 1-800-647-7261.
ENGINE AND ENGINE COOLING · 03V455000
2003-11-17
ON CERTAIN PASSENGER VEHICLES, THE CIRCUIT BOARD FOR THE CRANK POSITION SENSOR OR CAM POSITION SENSOR MAY HAVE AN IMPROPER SOLDER JOINT DUE TO SOLDER DEFORMATION CAUSED BY HEAT STRESS ACCELERATED BY THE EXISTENCE OF FLUX RESIDUE DURING THE SOLDERING PROCESS.
Consequence: THIS COULD CAUSE THE "SERVICE ENGINE SOON" WARNING LIGHT TO COME ON, CREATE A NO START CONDITION, CAUSE REDUCED ENGINE POWER, OR CAUSE THE ENGINE TO STOP RUNNING WITHOUT WARNING DURING VEHICLE OPERATION, WHICH COULD RESULT IN A CRASH.
Remedy: DEALERS WILL REPLACE THE CRANK POSITION SENSORS. CAMSHAFT POSITION SENSOR(S), AND IN SOME CASES, THE VARIABLE TIMING CONTROL SENSOR(S). VEHICLES INVOLVED IN A PREVIOUS RECALL CAMPAIGN, 01V357, ARE ALSO INCLUDED IN THIS NEW CAMPAIGN. THE REPLACEMENT SENSORS USED IN THAT CAMPAIGN ARE ALSO AFFECTED. OWNER NOTIFICATION BEGAN ON DECEMBER 22, 2003. OWNERS SHOULD CONTACT NISSAN AT 1-800-647-7261 OR INFINITI AT 1-800-662-6200.
POWER TRAIN:AUTOMATIC TRANSMISSION:GEAR POSITION INDICATION (PRNDL) · 03V123000
2003-03-31
ON CERTAIN SPORT UTILITY VEHICLES, THE NUT THAT ATTACHES THE TRANSMISSION GEAR SELECTOR SHAFT TO THE CONTROL VALVE LEVER IN THE TRANSMISSION MAY NOT BE ADEQUATELY TIGHTENED. THIS COULD RESULT IN THE TRANSMISSION NOT ACTUALLY BEING IN THE GEAR INDICATED BY THE GEAR SELECTOR LEVER. IN ADDITION, THE TRANSMISSION POSITION DISPLAY IN THE INSTRUMENT PANEL MAY NOT BE ON OR MAY BE INCORRECT.
Consequence: IF THE GEAR DISPLAYED IS DIFFERENT FROM THE GEAR ENGAGED, THIS COULD RESULT IN UNEXPECTED VEHICLE MOVEMENT AND A CRASH.
Remedy: DEALERS WILL CHECK THE AFFECTED NUT IN THE TRANSMISSION SHIFT LEVER LINKAGE, AND TIGHTEN IT IF NECESSARY. OWNER NOTIFICATION BEGAN APRIL 15, 2003. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT NISSAN AT 1-800-647-7261.
Size-standard part numbers — verify your connector type before buying. Rear blades are model-specific; check the package's vehicle list.
Fuel economy figures are EPA data via fueleconomy.gov (median across matching trims). Performance figures are compiled estimates for the 2003 Nissan Murano 3.5L V6 VQ35DE and can vary by trim.
🔧 Database maintained under the daily editorial review of Chris Hackleman · Master Technician · 20+ years and Jeff Moore · Master Lexus & Toyota Mechanic · 20+ years.