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Emergency
KNOWN FAULT · Chrysler

Gear that hangs on when braking downhill or lifting off, fixed with new gearbox software

Sources are not verified in real time and no entry confirms that your car is affected.

Engine / equipment
300C (LD) 3.6 V6 with the 8-speed automatic
Period mentioned
2016
Symptoms
When braking down a hill, or when lifting off suddenly after hard acceleration, the gearbox stays in a low gear and is slow to upshift, with the engine revving high. The rest of the time it shifts normally and there are no warning lights.
Possible cause described
It is a behaviour of the gearbox control unit (TCM) software. FCA improves it by reprogramming the TCM with the latest software (revised bulletin 21-063-15), for 2016 300s with the 3.6 V6 built up to 31/5/2016, also in Europe.
Check for the garage
Tell the garage in which situations it happens and ask them to check whether the gearbox control unit has the latest software before replacing gearbox parts.
Cost cited in the source
No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.

Sources from the original database

Has this happened to you?

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Frequently asked questions

How much does it cost to repair this fault?

No verified estimate; ask the garage for a quote.

A rough figure from the original database, not an up-to-date quote.

Calculate estimate
How is it checked?

Tell the garage in which situations it happens and ask them to check whether the gearbox control unit has the latest software before replacing gearbox parts.

What are the symptoms?

When braking down a hill, or when lifting off suddenly after hard acceleration, the gearbox stays in a low gear and is slow to upshift, with the engine revving high. The rest of the time it shifts normally and there are no warning lights.

Which cars and years does it affect?
Brands
Chrysler
Engine / equipment
300C (LD) 3.6 V6 with the 8-speed automatic
Period mentioned
2016

Taking it to a garage?

Find garages near you and, before you say yes, check whether the quote is reasonable.

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