# Service bulletin TSB18\-2052

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.

- Type: Service bulletin
- NHTSA id: 10136578
- Published by NHTSA: 2018\-05\-14
- Manufacturer's number: TSB18\-2052
- Manufacturer's date: 2018\-02\-12
- NHTSA component: ENGINE AND ENGINE COOLING

## NHTSA's summary

Some 2017\-2018 F\-Super Duty vehicles equipped with a 6.7L engine may exhibit a lack of heat on the driver side when the vehicle is operated in ambient temperatures below \-20Å?C \(4Å?F\). This condition may be due to deposits from the engine coolant trapped in the heater core. Follow the Service Procedure steps to correct the condition.

## The document

- [NHTSA's copy of the document (PDF)](https://static.nhtsa.gov/odi/tsbs/2018/MC-10136578-9999.pdf)
- [If that address does not open, try this one](https://static.nhtsa.gov/odi/tsbs/2018/MC-10136578-0001.pdf)

The document is the manufacturer's. This site does not hold it.

## Components

Engine

## Vehicles listed

- FORD F SUPER DUTY

JSON: [/v1/bulletins/10136578](/v1/bulletins/10136578)

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