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Service bulletins for the 1998 Mercury Mountaineer

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

282 on file from NHTSA, as of 2026-10-19.

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By component

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Bulletins, newest first
85122000-07-26. Service bulletin. POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT:SEAL. SOME VEHICLES MAY EXHIBIT AN OIL LEAK FROM THE FRONT AXLE PINION OIL SEAL AREA. **MR
84932000-07-26. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SOME VEHICLES MAY EXPERIENCE AN OIL LEAK AT THE REAR CRANKSHAFT AREA AFTER SERVICE. **MR
81642000-07-26. Service bulletin. UNKNOWN OR OTHER. INFORMATION REGARDING PUMP ALIGNMENT TOOLS. **MR
00832000-07-21. Service bulletin. POWER TRAIN:AXLE ASSEMBLY; SUSPENSION:REAR. SOME VEHICLES EQUIPPED WITH A 5.0L ENGINE MAY EXHIBIT A RUBBING NOISE DURING RIGHT HAND TURNS FROM THE REAR OF THE VEHICLE. **MR
114822000-07-10. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. FOR CERTAIN MODEL VEHICLES, THE 4R70W TRANSMISSION SOLENOID MOLDED LEADFRAME MUST BE REPLACED WHEN REMOVED. *TT
51892000-06-21. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). SOME VEHICLES MAY EXHIBIT A HESITATION / LACK OF POWER ON RE-ACCELERATION AFTER DECELERATING FROM HIGHWAY SPEED (45-65 MPH) TO A SLOW ROLL CONDITION (EXIT RAMP / TOLLBOOTH). THIS MAY BE DUE TO THE TRANSMISSION CALIBRATION NOT MAKING THE 3-1 DOWNSHIFT. ENGINEERING IS INVESTIGATING. *TT
9851572000-06-20. Service bulletin. TIRES. INFORMATION ON SETTING THE TIRE INFLATION PRESSURE FOR 1991 THROUGH 1999 MODEL YEAR VEHICLES IN THE PRE-DELIVERY PROCESS AND DURING MAINTENANCE INTERVALS. *TT
9851482000-06-20. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. SOME VEHICLES EQUIPPED WITH 5.0L ENGINES MAY EXHIBIT AN UPPER ENGINE TAPPING NOISE ON COLD START. *TT
9851442000-06-20. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE. ALL VEHICLES EQUIPPED WITH 4.0L SOHC THAT REQUIRE ENGINE SERVICE PLEASE NOTE THAT THE XL2Z-6M289-AA (DRIVE ASSEMBLY-CAMSHAFT-LH) MUST BE USED ON 4.0L SOHC ENGINES IF REPLACEMENT IS REQUIRED. *TT
9851332000-06-20. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. SOME VEHICLES EQUIPPED WITH A DUAL MEDIA (AM/FM/CASS/CD) RADIO MAY EXHIBIT AN AUDIO CONCERN OF NO DISPLAY OR GRAPHICS. *TT
9851032000-06-20. Service bulletin. UNKNOWN OR OTHER. VEHIUCLES WITH 4.0L OHV/SOHC, 5.0L, 4.6L, 5.4L MAY EXHIBIT A MALFUNCTION INDICATOR LAMP ON WITH EVAP SYSTEM DIAGNOSTIC TROUBLE CODES P1450, P0455, P0446. *TT
9850642000-06-19. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. REPEAT MESSAGE REGARDING ENGINE STALLING *TT
9850532000-06-19. Service bulletin. INTERIOR LIGHTING. REPEAT / REVISE MESSAGE REGARDING FLASHING 4X4 LIGHTS WITH NO DIAGNOSTIC TROUBLE CODES. *TT
50492000-06-19. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. BRIEF INFORMATION REGARDING UPPER ENGINE NOISE. *TT
121542000-06-19. Service bulletin. ELECTRICAL SYSTEM:IGNITION:ANTI-THEFT:CONTROL MODULE. SOME VEHICLES EQUIPPED WITH PATS (SECURILOCK) EXCEPT CERTAIN MODELS NOW HAVE AVAILABILITY OF FLEET KEYS THROUGH ROTUNDA. *MJS
121502000-06-19. Service bulletin. ENGINE AND ENGINE COOLING. INFORMATION CONCERNING THE REPLACEMENT OF THE ENGINES ON VEHICLES EQUIPPED WITH A 4.0L SOHC THAT REQUIRE SERVICE. *MJS
9850452000-06-16. Service bulletin. SUSPENSION:FRONT. REVISED MESSAGE REGARDING STEERING WHEEL SHIMMY, VIBRATION OR GRUNT ON SLOW SPEED TURNS ACTION ON SOHC EQUIPPED VEHICLES, PERFORM TSB 98-21-01. *TT
137232000-06-12. Service bulletin. POWER TRAIN:TRANSFER CASE (4-WHEEL DRIVE). SOME ALL WHEEL DRIVE VEHICLES MAY EXPERIENCE A LOW SPEED WHINING NOISE FROM THE TRANSFER CASE. *MJS
138572000-06-08. Service bulletin. UNKNOWN OR OTHER. SOME VEHICLES EQUIPPED WITH 5.0L ENGINES AND ALL WHEEL DRIVE (AWD) TRANSFER CASE MAY EXHIBIT A CONDITION OF 4X4 INDICATORS FLASHING AND MULTIPLE GEM DIAGNOSTIC TROUBLE CODES. *TT
81642000-06-07. Service bulletin. EQUIPMENT. INFORMATION ON 5R55E - 4R55E - 4R44E PUMP ALIGNMENT TOOLS. *TT
81492000-06-07. Service bulletin. EQUIPMENT:MECHANICAL:WRECKER AND WHEEL LIFT DEVICES. SUBJECT REGARDING NEUTRAL TOW INOPERATIVE AFTER GEM REPLACEMENT. *TT
81192000-06-07. Service bulletin. INTERIOR LIGHTING. SOME VEHICLES EQUIPPED WITH 5.0L ENGINE AND ALL WHEEL DRIVE (AWD) TRANSFER CASE MAY EXHIBIT A CONDITION OF 4X4 INDICATORS FLASHING AND MULTIPLE GEM DIAGNOSTIC TROUBLE CODES. *TT
00152000-06-06. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION. INFORMATION REGARDING THE NEW TRANSMISSION COOLER FLUSHER- SERVICE TIP. *MJS
135272000-05-18. Service bulletin. ENGINE AND ENGINE COOLING:ENGINE:GASOLINE. SOME VEHICLES EQUIPPED WITH 4.0L SOHC ENGINES MAY EXHIBIT AN OVERHEAT CONDITION THAT MAY BE ATTRIBUTED TO THE THERMOSTAT. ENGINEERING IS CURRENTLY INVESTIGATING THIS ISSUE AND IS LOOKING FOR THERMOSTATS AND COOLANTS SAMPLES FROM THESE VEHICLES. *TT
135042000-05-18. Service bulletin. POWER TRAIN:AXLE ASSEMBLY:AXLE SHAFT:SEAL. CONCERNS WITH VEHICLES EXHIBITING AN OIL LEAK FROM THE FRONT AXLE PINION SEAL. ENGINEERING IS CURRENTLY ADDRESSING THIS ISSUE THROUGH THE HIGH MILAGE / TIME-IN-SERVICE CONCERN RESOLUTION PROCESS. *TT

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.