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Service bulletins for the 1999 Mercury Cougar

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.

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

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Bulletins, newest first
99M082000-02-09. Service bulletin. VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM:FAN/MOTOR. OWNER NOTIFICATION PROGRAM PROVIDING ADDITIONAL COVERAGE FOR REPLACEMENT OF THE BLOWER RESISTOR AND ATTACHED WIRE CONNECTOR. THIS ADDITIONAL COVERAGE IS PROVIDED IN CASE THE VEHICLE OWNER EPXERIENCES DURABILITY CONCERNS WITH THESE COMPONENTS. *TT
99131371999-12-07. Service bulletin. ELECTRICAL SYSTEM:STARTER ASSEMBLY. CONCERNS WITH 2.5L ENGINE EQUIPPED VEHICLES AND CD4E TRANSAXLE EXHIBITING A STARTER GRINDING NOISE AND / OR LACK OF STARTER DRIVE ENGAGEMENT. *TT
99130921999-12-07. Service bulletin. ENGINE AND ENGINE COOLING. INFORMATION WHEN DIAGNOSING THE AMBIENT TEMPERATURE DISPLAY AND / OR THE OPTIONAL FROST / ICE WARNING SYSTEM ON SOME VEHICLES, AWARENESS OF THE OPERATING STRATEGY MAY AID IN IMPOROVED DIAGNOSIS. *TT
99130291999-12-07. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. ENGINEERING IS CURRENTLY INVESTIGATING CONCERNS WITH 2.5L VEHICLES EXHIBITING A SULFUR SMELL FROM THE EXHAUST. *TT
99127021999-12-06. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. SOME 5-SPEED MANUAL TRANSMISSIONS EQUIPPED VEHICLES BUILT PRIOR TO MARCH 15, 1999 MAY EXHIBIT A 'GRINDING' NOISE FROM THE FRONT END WHEN ACCELERATING DURING A HARD RIGHT HAND TURN. *TT
99126891999-12-06. Service bulletin. STRUCTURE:BODY:DOOR. EXHIBITING AN INTERMITTENT CONCERN OF THE POWER DOOR LOCKS SELF-ACTUATING (LOCKING) WITHOUT PRESSING THE LOCK BUTTON. *TT
99126881999-12-06. Service bulletin. UNKNOWN OR OTHER. CONCERNS WITH AIR COMING FROM THE INSTRUMENT PANEL VENTS WHEN FLOOR, DEFROST, OR FLOOR / DEFROST IS SLECTED ON VEHICLES BUILT AFTER 10/19/98. *TT
99126821999-12-06. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES:EXTERIOR. CONCERNS WITH LOSS OF THE POWER FUNCTION OF ONE OR BOTH EXTERIOR MIRRORS. *TT
9967461999-12-02. Service bulletin. ENGINE AND ENGINE COOLING:EXHAUST SYSTEM. CUSTOMERS MAY COMPLAIN OF A SULFUR SMELL FROM THE EXHAUST ON VEHICLES EQUIPPED WITH A 2.5L. *TT
991481999-11-24. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. SOME 2.5L VEHICLES EQUIPPED WITH MTX-75 TRANSAXLE MAY NOT MOVE. THIS MAY BE CAUSED BY THE DIFFERENTIAL GEAR FAILING. *TT
991471999-11-24. Service bulletin. POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE (TCM/PCM/TECM). INFORMATION ON USING THE SERVICE BAY TECHNICAL SYSTEM (SBTS) AND NEW GENERATION STAR (NGS) TESTER, AND TO UPDATE THE POWERTRAIN CONTROL MODULE (PCM) INFORMATION CHARTS. *TT
991781999-10-04. Service bulletin. ELECTRICAL SYSTEM:WIRING:INTERIOR/UNDER DASH. ON SOME VEHICLES, A DIAGNOSTIC TROUBLE CODE (DTC) P0325 (KNOCK SENSOR CIRCUIT MALFUNCTION) MAY APPEAR DURING KOER, BUT FURTHER TESTING DETERMINES THE KNOCK SENSOR TO BE SATISFACTORY. *TT
991751999-10-04. Service bulletin. POWER TRAIN:AXLE ASSEMBLY. SOME VEHICLES MAY HAVE NO FORWARD ENGAGEMENT MOVEMENT OCCURRING ALTHOUGH REVERSE ENGAGEMENT MAY BE POSSIBLE DUE TO OVERDRIVE / REVERSE RING GEAR ASSEMBLY CAUSING A WOBBLE AND SIDE LOADING OF THE FORWARD CLUTCH SNAP RING RETAINER. *TT
9961661999-09-09. Service bulletin. STRUCTURE:BODY:DOOR. EXHIBITING AN INTERMITTENT CONCERN OF THE POWER DOOR LOCK SELF-ACTUATING WITHOUT PRESSING THE LOCK BUTTON. *TT
9961651999-09-09. Service bulletin. UNKNOWN OR OTHER. CONCERNS WITH AIR DISTRIBUTION COMING FROM THE INSTRUMENT PANEL. *TT
61571999-09-09. Service bulletin. VISIBILITY:REARVIEW MIRRORS/DEVICES. INFORMATION REGARDING INOPERATIVE MIRRORS. *TT
9961401999-09-09. Service bulletin. STRUCTURE:BODY:TAILGATE; STRUCTURE. SOME VEHICLES MAY EXHIBIT THE LIFTGATE ASSIST STRAP PULLING LOOSE. *TT
9960411999-09-08. Service bulletin. POWER TRAIN:MANUAL TRANSMISSION. VEHICLES MAY EXHIBIT A HARD TO SHIFT CONDITION IN COLD WEATHER. *TT
129081999-09-08. Service bulletin. ELECTRICAL SYSTEM:WIRING:INTERIOR/UNDER DASH. INFORMATION ON DIAGNOSING THE AMBIENT TEMPERATURE DISPLAY. *TT
128141999-09-07. Service bulletin. ELECTRICAL SYSTEM:WIRING. INFORMATION ON CHECKING WIRE HARNESS AT THE RIGHT FRONT PASSENGER ANCHOR RAIL TO FLOOR PAN. *TT
128021999-09-07. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. EXPERIENCING HEADLAMP CONDENSATION. *TT
63981999-09-03. Service bulletin. EQUIPMENT:ELECTRICAL:RADIO/TAPE DECK/CD ETC.. SOME VEHICLES EQUIPPED WITH FACTORY CD CHANGERS MAY EXHIBIT CUSTOMER CONCERNS OF CD INOPERATIVE, NO CD DISPLAYED ONTHE RADIO DISPLAY OR ONE OR MORE SPEAKERS INOPERATIVE WHEN IN CD MODE. *TT
63871999-09-02. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. INFORMATION REGARDING MINOR CONDENSATION VISIBLE IN THE HEADLAMPS. *TT
9913101999-08-26. Service bulletin. EXTERIOR LIGHTING:HEADLIGHTS. SUBJECT REGARDING EXCESS CONDENSATION IN THE HEADLAMPS ON SOME VEHICLES. *TT
991391999-08-26. Service bulletin. EXTERIOR LIGHTING:BRAKE LIGHTS. CONDITIONS WITH THE BRAKE LAMPS INADVERTENTLY DISABLING THE BRAKE SHIFT INTERLOCK. *TT

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