2018 Mazda CX-5 Technical Service Bulletins

634 technical service bulletins (TSBs) are on record for the 2018 Mazda CX-5. TSBs are notes manufacturers send to dealers about repair procedures for issues seen in the field. They are not recalls and do not by themselves mean a vehicle has a fault.

• 10189822Mar 11, 2021Body and structure. Some customers may complain about rust at the bottom (inner side) of the doors where the seaming welt is located. It is caused by mud/sand adhering to the side sill, which scratches the paint surface when the door is opened/closed. The mud/sand is most likely brought in by the driver and/or passenger when stepping in and out of the vehicle.
• 10189821Mar 9, 2021Body and structure. Some customers may notice the flock finishing on the door sash molding is peeled off (as shown below) when opening the frozen door. This concern may be caused by insufficient durability due to an improper production process of the door sash moldings. To eliminate this concern, the production process of the door sash moldings has been changed.
• 10189949Mar 8, 2021Equipment, Engine cooling. CHECK ENGINE LIGHT ON WITH DTC P0126:00 AND ENGINE RUNNING COOLER THAN NORMAL / POOR HEATER PERFORMANCE / LOW ENGINE COOLANT TEMPERATURE (BLUE) LIGHT ON: Some customers may experience the CHECK ENGINE LIGHT ON with DTC P0126:00 (Thermostat stuck open) and one or more of the following symptoms: The engine takes longer to warm up. The engine temperature gauge fluctuates. The low coolant temperature indicator (blue)…
• 10188024Feb 25, 2021Engine cooling. Some customers may experience the CHECK ENGINE LIGHT ON with DTC P0126:00 (Thermostat stuck open) and one or more of the following symptoms: The engine takes longer to warm up. The engine temperature gauge fluctuates. The low coolant temperature indicator (blue) light stays on longer or comes on while driving. Poor heater performance, especially at idle.
• 10188047Feb 19, 2021Equipment, Engine cooling. MULTI-MODEL - MAZDA MOBILE START CUSTOMER SATISFACTION PROGRAM (CSP05). As shared previously, due to planned industry-wide changes in mobile network infrastructure and wireless technology, the Mazda Mobile Start (MMS) accessory was no longer offered beginning with 20MYvehicles.
• 10188042Feb 19, 2021Engine cooling, Equipment. MULTI-MODEL - MAZDA MOBILE START CUSTOMER SATISFACTION PROGRAM (CSP05). As shared previously, due to planned industry-wide changes in mobile network infrastructure and wireless technology, the Mazda Mobile Start (MMS) accessory was no longer offered beginning with 20MYvehicles.
• 10188016Feb 8, 2021Electrical system. This service bulletin provides testing and charging procedures in order to promote proper battery maintenance, to deliver new vehicles with fully charged batteries, and to reduce unnecessary battery replacement cost. For new vehicles in stock at the dealer, inspect and maintain the battery periodically according to the repair procedure.
• 10188015Feb 8, 2021Electrical system. The Mazda DCA-8000PM is required for all warranty battery testing. If the Mazda DCA-8000PM is not used, incorrect battery testing may result in unnecessary battery replacement. Use the following test procedures in this Service Bulletin to test Mazda vehicle batteries and to generate a Warranty Code.
• 10188014Feb 5, 2021Engine cooling. Some vehicles may have the check engine light on with DTC P0524:00 or P055F:00 stored in memory. Contamination in the engine oil may cause the engine oil solenoid valve to become stuck, resulting in improper operation of the oil pump and improper oil pressure.
• 10186701Jan 26, 2021Equipment. A musty/mildew type odor may come from the vents when the air conditioning (A/C) system is operating. It is most noticeable when the A/C is first turned ON. This odor is the result of mold growth in the A/C evaporator/cooling unit which is caused by condensation, dust, and pollen within the cooling unit. This condition is usually worse during high humidity conditions. “Mazda Air Cooling Coil Coating” is…
• 10186699Jan 26, 2021Steering. Some customers may complain that the steering wheel is off center more than 3° even when driving straight on a flat road.
• 10186696Jan 26, 2021Equipment, Engine cooling, Electrical system. Some vehicles may experience the CHECK ENGINE LIGHT ON with DTC P2610 and P2507 stored in memory after engine start and room fuse 15A (A) removed. P2610:00: Instrument cluster internal engine off timer performance problem. P2507:00: PCM battery voltage low input
• 10186810Jan 25, 2021Electrical system, Equipment. DTC P0942:49 is missing from the Workshop Manual on MGSS. Follow the repair procedure below to repair the vehicle until the information is added.
• 10186707Jan 21, 2021Equipment, Engine cooling. MULTI-MODEL - MAZDA MOBILE START CUSTOMER SATISFACTION PROGRAM. As shared previously, due to planned industry-wide changes in mobile network infrastructure and wireless technology, the Mazda Mobile Start (MMS) accessory was no longer offered beginning with 20MYvehicles. These technology changes are scheduled to occur in late 2021 as our service provider transitions away from a 3G network which currently supports…
• 10186705Jan 21, 2021Body and structure. Some vehicles may experience stains appearing on the hood, roof and/or trunk of the vehicle. This concern is most likely to be found in a cold weather areas just after the RAPGARD is removed at PDI. This may be caused by moisture which has been trapped and condensed between the paint and the RAPGARD. These types of stains can be removed with a heat gun or an infrared drier.
• 10186704Jan 21, 2021Body and structure. When encountering a vehicle with paint damage, refer to the "Mazda Paint Warranty Guide" to determine cause, prevention, remedy, and warranty coverage (if applicable).
• 10186703Jan 21, 2021Equipment, Vehicle speed control, Electrical system. In accordance with Federal regulations, follow the procedure listed below when replacing a speedometer
• 10186698Jan 21, 2021Wheels. Some automotive cleaning products contain strong acid or alkali. When these types of cleaners are used to clean the wheels on Mazda vehicles, the chemicals contents penetrate the clear coating of the wheel surface and damage the paint under the clear coating. The damaged area has the appearance of dark stains.
• 10186693Jan 21, 2021Wheels, Steering, Transmission and drivetrain, Engine cooling. Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as cited in the vehicle specific workshop manual or owner's manual. Services performed outside of Mazda's factory scheduled maintenance are not recommended. These services are unnecessary and create unneeded expenses for your customers.
• 10186697Jan 20, 2021Suspension. Some customers may complain about oil seepage or oil leakage from the rear shock absorbers. This concern may be due to a lack of sealing performance. To eliminate the oil seepage/leakage, the rear shock absorbers production process has been modified.
• 10186695Jan 14, 2021Engine cooling. Some vehicle may exhibit a tapping noise from the engine during idling; etc., and synchronized to the engine rpm. The tapping noise may be caused by the switchable hydraulic lash adjuster (HLA), which may not work properly due to air bubbles accumulated in the oil passage in it.
• 10185048Dec 18, 2020Transmission and drivetrain. Some customers may complain about a surging at low speeds and during acceleration. This surging is in the longitudinal direction, felt about 2 cycles per second, and occurs in the locked up 1st gear. This may be caused by the torque fluctuation and the torsional resonance in the torque converter. To correct this concern, the PCM software has been modified to reduce the torque fluctuation.
• 10185181Dec 14, 2020Equipment. In order to ensure key code security, MNAO has restricted key code access for the new auxiliary key. This Service Alert provides information on how to obtain the 10-digit key code needed for cutting a new auxiliary key blank if all auxiliary keys are lost.
• 10185052Dec 10, 2020Seats, Equipment. At PDI or when new vehicle is delivered, some customers may complain about wrinkles on the leather seat cushion and/or seat back surface. Customers having this concern should have their vehicle repaired by a qualified upholstery repair specialist using the following repair procedure.
• 10185047Dec 10, 2020Brakes. Some vehicles may exhibit a squeak noise from the rear brakes while braking lightly. The squeak noise may occur more frequently when driving at slow speeds. The noise is caused by poor contact between the guide plate and the mounting support.
• 10185186Dec 3, 2020Engine cooling, Equipment, Electrical system. A new cylinder head assembly for service parts has been newly established for SKYACTIV-G 2.5 with cylinder deactivation when replacement is needed. Valves, valve springs, valve spring seats, and cotters (IN/EX) are included in the new assembly. NOTE: Cylinder head replacement requires MASH authorization.
• 10185185Dec 2, 2020Equipment, Engine cooling. Some customers may experience the CHECK ENGINE LIGHT ON with DTC P0126:00 (Thermostat stuck open) and one or more of the following symptoms: The engine takes longer to warm up. The engine temperature gauge fluctuates. The low coolant temperature indicator (blue) light stays on longer or comes on while driving. Poor heater performance, especially at idle.
• 10183666Nov 18, 2020Transmission and drivetrain, Equipment. CRACKED REAR DIFFERENTIAL. The rear differential case could develop a crack in the case, as shown below. NOTE: This could affect new vehicles just delivered to the dealer as well as customer vehicles.
• 10183607Nov 18, 2020Electrical system, Equipment. Some customers may complain about the following MAZDA CONNECT™ Temperature Warning message:  Display is too Hot. Screen performance may be decreased until it cools. The warning message displays when the MAZDA CONNECT™ screen temperature is above 176 degrees Fahrenheit (80 degrees Celsius).
• 10183601Nov 17, 2020Electrical system, Equipment. Some vehicles may exhibit a Connectivity Master Unit (CMU), a BLUETOOTH® hands-free unit or text messaging related concerns. To improve the handling of BLUETOOTH® hands-free and/or text messaging customer concerns, Mazda created a special service and parts exchange program as of February 2010.
• 10183634Nov 13, 2020Equipment, Engine cooling. MULTI-MODEL - MAZDA MOBILE START CUSTOMER SATISFACTION PROGRAM. As shared previously, due to planned industry-wide changes in mobile network infrastructure and wireless technology, the Mazda Mobile Start (MMS) accessory was no longer offered beginning with 20MYvehicles. These technology changes are scheduled to occur in late 2021 as our service provider transitions away from a 3G network which currently supports…
• 10183633Nov 10, 2020Engine cooling, Equipment. MULTI-MODEL - MAZDA MOBILE START CUSTOMER SATISFACTION PROGRAM. As shared previously, due to planned industry-wide changes in mobile network infrastructure and wireless technology, the Mazda Mobile Start (MMS) accessory was no longer offered beginning with 20MYvehicles. These technology changes are scheduled to occur in late 2021 as our service provider transitions away from a 3G network which currently supports…
• 10183604Nov 10, 2020Engine cooling. Some customers may complain about high engine oil consumption. Before attempting any repairs, verify the complaint by using the guideline below to determine if an engine repair is necessary: Engine Oil Consumption Inspection Guideline 1. Record the vehicle mileage. 2. Engine at normal operating temperature, top off engine oil level to the full mark on the dipstick. 3. Ask the customer to return to the dealer after…
• 10183590Nov 9, 2020Equipment, Brakes. Some vehicles equipped with electric parking brake (EPB) may exhibit a grinding noise from the rear brakes when braking. This may be caused by the rear brake pads not having the capability to remove the rust from the rear brake discs. The red rust accumulated on the discs is exposed to high temperatures during braking, and consequently the rust turns black. As the black rust is too hard to be removed by the brake…
• 10183589Nov 4, 2020Equipment, Engine cooling. Some vehicle may exhibit a tapping noise from the engine during idling; etc., and synchronized to the engine rpm. The tapping noise may be caused by the switchable hydraulic lash adjuster (HLA), which may not work properly due to air bubbles accumulated in the oil passage in it.
• 10183592Nov 3, 2020Transmission and drivetrain. Some customers may complain of a whining noise from the automatic transaxle when driving at 10 mph and above. The noise:  Depends on the vehicle’s speed only (the more speed, the more noise)  Occurs with all types of driving (acceleration, deceleration, steady speed)  Does not depend on rpm, gear, or ATF temperature
• 10182123Oct 28, 2020Engine cooling, Equipment. Currently, the instructions on MGSS recommend the use of Loctite 962T or equivalent when installing a SKYACTIV cylinder head, but it is no longer available. The following 3 adhesives are alternatives available as an equivalent to Loctite 962T: Loctite 272, Loctite 518 Threebond TB-1386H
• 10182122Oct 15, 2020Electrical system, Equipment. APPLE CARPLAY / ANDROID AUTO FREQUENTLY ASKED QUESTIONS (FAQ): NOTE: The following vehicles are not equipped with Apple CarPlay / Android Auto, but it can be activated using MDARS. See Activation instructions on MGSS - Infotainment - MAZDA CONNECT Updates - Apple Carplay / Android Auto MDARS Activation Instructions
• 10182126Oct 14, 2020Equipment, Engine cooling. CRACKED REAR DIFFERENTIAL: Be aware that some new AWD vehicles have been found with cracked rear differential cases, as shown below. NOTE: This may affect new vehicles just delivered to the dealer or new vehicles in dealer inventory.
• 10182121Oct 12, 2020Equipment. ACCESSORY INSTRUCTIONS LOCATION: Accessory instructions can be found in the Accessory eCatalog. https://ecatalog.mazdausa.com
• 10182094Oct 12, 2020Brakes. Some vehicles equipped with electric parking brake (EPB) may exhibit a grinding noise from the rear brakes when braking. This may be caused by the rear brake pads not having the capability to remove the rust from the rear brake discs. The red rust accumulated on the discs is exposed to high temperatures during braking, and consequently the rust turns black. As the black rust is too hard to be removed by the brake…
• 10180595Sep 30, 2020Engine cooling. Some vehicles may experience the check engine light on with DTCs P2096:00, P2097:00 and/or P0524:00 that cannot be cleared by itself, and the check engine light stays on even if the detection condition has gone. P2096:00 - Air fuel too lean  P2097:00 - Air fuel too rich  P0524:00 - Engine oil pressure too low. This concern may be caused by improper PCM control logic. The PCM software has been…
• 10180597Sep 25, 2020Suspension. Some customers may complain about oil seepage or oil leakage from the rear shock absorbers. This concern may be due to a lack of sealing performance. To eliminate the oil seepage/leakage, the rear shock absorbers production process has been modified.
• 10180598Sep 24, 2020Transmission and drivetrain, Electrical system. Some customers may complain about a surging at low speeds and during acceleration. This surging is in the longitudinal direction, felt about 2 cycles per second, and occurs in the locked up 1st gear. This may be caused by the torque fluctuation and the torsional resonance in the torque converter. To correct this concern, the PCM software has been modified to reduce the torque fluctuation.
• 10180667Sep 15, 2020Equipment, Electrical system. All Mazda Connect vehicles in new car inventory must be updated to the software version listed below in this TSB as part of the New Car Ready Step 3 process. Make sure the new vehicle specialist receives a copy of this bulletin. Some vehicles may experience the symptoms mentioned below, which can be fixed with the latest software update (Version 70.00.367 or later).
• 10180714Sep 10, 2020Equipment, Engine cooling. If you receive a customer concern about the CHECK IN light coming on and DTC P3400 (cylinder deactivation system malfunction) stored, the cylinder deactivation oil control valve may be plugged with plastic debris from the oil filter wrapper. The debris may enter the center of the oil filter when poking a hole in the filter wrapper during removal, and then travel through the engine and plug the cylinder deactivation…
• 10180599Sep 8, 2020Steering. Some customers may complain of a steering wheel vibration (in a rotational direction), when they are not holding onto the steering wheel. The vibration stops when holding onto the steering wheel or when driving. This may be caused by improper control logic of the EPS control module. To eliminate this concern, the EPS control logic has been modified.
• 10180670Sep 4, 2020Electrical system, Equipment, Steering, Brakes, Visibility (wipers, defrost…. Some vehicles may exhibit that the SBS/SCBS warning light (amber) turns ON right after the engine is started with DTC U0420:68 [FSC] stored in memory.  DTC U0420:68 [Forward sensing camera (FSC)]: Error signal received from electric power steering (EPS) control module. For Mazda6 and CX-5, the following error messages may appear in the instrument cluster.
• 10180666Sep 3, 2020Body and structure, Equipment. Some vehicles may exhibit poor fitting rear door weatherstrips at the lower/front location. The weatherstrips may be deformed by frequent contact with passengers entering and exiting the vehicle, causing the weatherstrip joint to become enlarged. The enlarged weatherstrip joint does not grip the door panel tight enough when it is refitted.
• 10180665Sep 3, 2020Equipment, Body and structure. Some vehicles may have a loose rear bumper reflector without any visible external damage to the rear bumper cover. Due to an external force applied to the bumper cover, one of the brackets fastening the reflector to the bumper cover may have become detached.

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