Transmission Fluid Leak At The Damper Housing

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TSB 15-0174

HF-35 TRANSMISSION FLUID LEAK AT DAMPER HOUSING TO TRANSMISSION CASE JOINT – RTV SEALANT FAILURE – BUILT ON OR BEFORE 12/1/2013

FORD:	2013 C-MAX 2013-2014 Fusion
LINCOLN:	2013-2014 MKZ

This article supersedes TSB 14-0085 to update the Service Procedure, Part List and Service Labor Time Standards.

ISSUE:

Some 2013 C-Max, 2013-2014 Fusion, MKZ Hybrid and Energi vehicles equipped with a HF-35 automatic transmission and built on or before 12/1/2013 may exhibit a transmission fluid leak at the damper housing to transmission case joint.

This condition may be due to an adherence failure of the RTV.

ACTION:

Follow the Service Procedure steps to correct the condition.

SERVICE PROCEDURE

Remove the transmission from the vehicle and separate the damper housing from the transmission case. Refer to the Workshop Manual (WSM), Section 307-01.
Use Motorcraft Silicone Gasket Remover to remove old RTV from the housing and case mating surfaces. Allow to dry.
Use Motorcraft Metal Surface Prep Wipes to clean and etch the mating surfaces. Allow to dry.
Apply a bead of Motorcraft Ultra Silicone Sealant and reassemble the transmission. Refer to WSM, Section 307-01.
Install the transmission. Refer to WSM, Section 307-01.

Ford Genuine Ford Fluid TA-29 Ultra Silicone Sealant - 2.4 oz.

OPERATION	DESCRIPTION	TIME
150174A	2013 C-MAX FHEV: Reseal The Damper Housing Following The Service Procedure (Do Not Use With Any Other Labor Operations)	10.3 Hrs.
150174A	2013 C-MAX PHEV: Reseal The Damper Housing Following The Service Procedure (Do Not Use With Any Other Labor Operations)	11.0 Hrs.
150174B	2013-2014 Fusion Hybrid FHEV An PHEV: Reseal The Damper Housing Following The Service Procedure (Do Not Use With Any Other Labor Operations Except C Or D)	8.5 Hrs.
150174B	2013-2014 MKZ Hybrid: Reseal The Damper Housing Following The Service Procedure (Do Not Use With Any Other Labor Operations Except C Or D)	8.9 Hrs.
150174C	2013-2014 Fusion/MKZ Hybrid And Energi: Additional Time To Check And Correct Front Toe (Can Be Claimed With Operation B)	0.6 Hr.
150174D	2013-2014 Fusion/MKZ Hybrid And Energi Vehicles With Lane Departure: Additional Time To Check And Correct Front Toe (Can Be Claimed With Operation B)	0.8 Hr.

WARRANTY STATUS

Eligible Under Provisions Of New Vehicle Limited Warranty Coverage And Emissions Warranty Coverage.
Warranty/ESP coverage limits/policies/prior approvals are not altered by a TSB. Warranty/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool.

DEALER CODING

BASIC PART NO.	CONDITION CODE
7005	d8

Lubegard 50902 Automatic Transmission Fluid Protectant, 32 oz.

Prevents overheating, reducing elevated operating temperatures up to 40 degrees Farenheit - Optimizes total transmission performance
Eliminates transmission fluid foaming and oxidation and reduces wear throughout the transmission
Eliminates clutch chatter and torque converter shudder; Softens and modifies harsh shifts making them quicker in duration
Extends fluid life / Raises the thermal and oxidative stability of the fluid
Only protectant that increases the fluid’s ability to transfer heat / Protects new seals and permanently restores older seals to a like-new condition, without adverse side effects

Last update on 2026-06-09 / Affiliate links / Images from Amazon Product Advertising API

Sea Foam Trans Tune Transmission Treatment, TT16, 16 oz, Pack of 1

Helps fluid systems work smoother and last longer.
Safe in most types of automatic transmission fluid, hydraulics, or power steering fluid systems. Safe for conventional and synthetic fluids.
Dissolves and liquefies harmful gum and varnish buildup in fluid
Cleans and lubricates valve bodies, shift actuators and solenoids. Helps to control moisture in fluid.
Will not swell seals or harm gaskets, O-rings, or clutch material

Last update on 2026-06-09 / Affiliate links / Images from Amazon Product Advertising API

XADO EX120 Automatic Transmission Fix - Treatment for CVT & Other Gearbox Types | ATF Additive & Protectant - Reduces Sticking, Shudder and Slipping

Rebuilds And Restores Metal Parts And Protects Them From Future Wear.
Anti Friction Modifier. Eliminates Surfaces Defects & Protects From Extreme Heat
Stops Transmission Shudder, Reduces Noise & Vibration. Ultimate Stop Slipping Additive
Increases Performance Reliability And Prolongs Service Life Of Control Gears
Universal for Automatic, CVT, Tiptronic, Manumatic, Semi-Automatic Transmission

Last update on 2026-06-10 / Affiliate links / Images from Amazon Product Advertising API

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