Service bulletin TSB 18-2307

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.

The communication, as NHTSA indexes it (as of 2026-10-19)
Type	Service bulletin
NHTSA id	10148708
Published by NHTSA	2018-11-19
Manufacturer's number	TSB 18-2307
Manufacturer's date	2018-10-05
NHTSA component	ENGINE AND ENGINE COOLING:EXHAUST SYSTEM

NHTSA's summary

Some 2018 Mustang vehicles equipped with a 5.0L engine built on or before 16-Apr-2018 may exhibit an Exhaust Mode Selection Not Available or Drive Mode Not Available message displayed in the instrument panel cluster (IPC). This may occur when attempting to change the exhaust mode or drive mode. Follow the Service Procedure steps to correct the condition.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Engine, Exhaust and emissions

Vehicles listed
FORD MUSTANG	2018

Listing a model year does not mean every vehicle of it is concerned: the document says which.

Other bulletins for the same vehicles and component
SSM 52335	2024-03-20. Service bulletin. For 2015-2024 Ford and Lincoln vehicles equipped with turbocharged engines and customer concern of an engine oil leak, refer to Workshop Manual (WSM), Section 303-00 for oil leak inspection and testing methods. Ford has evaluated turbochargers replaced for oil leak symptoms and although oil may collect on the external surface of a turbocharger, it is extremely rare for a turbocharger assembly to be the root cause of the oil leak. Careful inspection of the turbocharger oil feed and drain tubes should be performed along with the recommended WSM procedures as needed. Warranty claims for turbocharger replacement going forward will be assessed.
SSM 52334	2024-03-20. Service bulletin. Some 2011-2024 Mustang and F-150 vehicles equipped with a 5.0L engine may exhibit a tick tap and/or typewriter ticking noise at idle after an engine oil change. It is often referred to as typewriter noise because of its similarity to the sound of a mechanical typewriter. The noise in question may be heard on some engines when engine temperatures reach 150°F (65°C) or higher and engine speed is at idle up to approximately 1700 RPM. It can typically be heard at the front wheel well and is often isolated to the transmission bell housing or oil pan area. The typewriter noise tick rate can be faster or slower and is not detrimental to the engine function or durability and has no short or long term effects on the engine. This an operating characteristic of the 5.0L engine and no repairs should be attempted. This information along with an example audio clip has been added to the WSM Section 303-00 Engine System General Information > Diagnosis and Testing > Engine > PPT F > Step F2.
TSB 23-2132	2023-05-31. Service bulletin. Some 2018-2023 Mustang vehicles (non-Shelby GT-350) may exhibit various concerns with the active exhaust system. These may include Exhaust Mode Selection Not Available messages, and/or illuminated malfunction indicator lamp (MIL) with diagnostics trouble codes (DTCs) P26C5, P26C6, P26FE, P2BF9, P2BFB, P26C7, P2BF5, P2BF8, P2BFD and/or P2BFA. This may be due to an improperly seated exhaust system. To correct the condition, follow the Service Procedure to diagnose the tailpipe actuator.
TSB 22-2373	2023-01-31. Service bulletin. Some 2018-2019 Mustang vehicles equipped with a 5.0L engine and a manual transmission may exhibit an inability to drive the vehicle in first and/or second gear. This may be due to a broken 1-2 shift fork. To correct the condition, follow the Service Procedure to replace the 1st/2nd shift fork, the mainshaft 2nd gear, and the 1st/2nd gear synchronizer hub and sleeve.
TSB 22-2372	2023-01-31. Service bulletin. Some 2018 Mustang vehicles equipped with a 5.0L engine and a manual transmission may exhibit an inability to engage third and fourth gear. This may be due to a broken 3-4 shift fork. To correct the condition, follow the Service Procedure to replace the 3rd/4th shift fork, the 1st/2nd shift fork, the countershaft 3rd gear, and the 3rd/4th gear synchronizer hub and sleeve.
TSB 22-2282	2022-10-31. Service bulletin. Some 2018-2022 Mustang vehicles (non-Shelby GT-350) may exhibit various concerns with the active exhaust system. These may include Drive Mode Not Available or Exhaust Mode Not Available messages, and/or illuminated malfunction indicator lamp (MIL) with diagnostics trouble codes (DTCs) P26C5, P26C6, P26FE, P2BF9, P2BFB, P26C7, P2BF5, P2BF8, P2BFD and/or P2BFA. This may be due to an improperly seated exhaust system. To correct the condition, follow the Service Procedure to diagnose the tailpipe actuator .
TSB 22-2140	2022-04-26. Service bulletin. Some 2015-2020 Mustang Shelby GT350/GT350R vehicles may exhibit a hesitation or surge in the vehicle with no diagnostic trouble codes (DTCs) present. This may be accompanied by an inoperative cruise control system. This may be due to a transmission output shaft flange nut that has come loose, allowing the output shaft tone ring to move in relation to the output shaft causing an erroneous signal. To resolve the condition, follow the Service Procedure steps to replace the output shaft flange nut.
SSM 50089	2021-09-28. Service bulletin. Some 2017-2021 Ford and Lincoln vehicles equipped with 3.3L, 3.5L EcoBoost, or 5.0L engines may exhibit stalling, lack of power, low fuel rail pressure and/or DTCs P0087 or P008A after a repair was made that required the removal of the fuel line that connects the high-pressure fuel pump to the port injection rail, such as injector replacements or base engine repairs. This line must be installed in the correct orientation as it has an internal one-way check valve. To determine if the fuel line has been installed improperly, look at the position of the Oetiker clamp (stainless band clamped around the black fuel line). The clamp holds the one-way check valve in place and should be located closest to the end connected to the port injection rail. If the clamp is not closest to the port injection rail, remove and reinstall the line in the proper orientation.
SSM 49821	2021-06-01. Service bulletin. Some 2015-2021 Ford and Lincoln vehicles may exhibit an illuminated MIL with diagnostic trouble codes (DTC) P0011, P0012, P0014, P0015, P0016, P0017, P0018, P0019, P0021, P0022, P0024 and/or P0025. This may be due to small debris causing the VCT solenoid to stick. Before attempting any component diagnosis or replacement of the VCT solenoid, refer to Powertrain Control and Emissions Diagnosis (PC/ED) pinpoint test HK11 to cycle the affected VCT solenoid 10 times to attempt to clear the debris. For claiming, use causal part 6M280 and applicable labor operations in Section 10 of the Service Labor Time Standards (SLTS) Manual.
SSM 49761	2021-05-03. Service bulletin. Some 2011-2021 Mustang and F-150 vehicles equipped with a 5.0L engine may exhibit a ticking noise at idle after an engine oil change. It is often referred to as typewriter noise because of its similarity to the sound of a mechanical typewriter. The noise in question may be heard on some engines when engine temperatures reach 150F (65Å’C) or higher and engine speed is at idle up to approximately 1700 RPMs. It can typically be heard at the front wheel well and is often isolated to the transmission bell housing or oil pan area. The typewriter noise is not detrimental to the engine function or durability and has no short or long term effects on the engine. This an operating characteristic of the 5.0L engine and no repairs should be attempted.