hybrid transmissions

Joined
Feb 11, 2008
Messages
1,077
Location
Louisiana
I have a question about hybrid transmissions. Seems most of them have the "traction motor" in the transmission themselves. If the traction motor goes bad do you have to replace the whole transmission?

thanks
 
Joined
Aug 14, 2013
Messages
21
Location
Maine
I have a question about hybrid transmissions. Seems most of them have the "traction motor" in the transmission themselves. If the traction motor goes bad do you have to replace the whole transmission?

thanks
As a general rule yes. You can't buy just the motor for the transmission from the manufacturer but you maybe able to get one from a wrecked car in a junk yard.
 
Joined
Nov 9, 2008
Messages
19,781
Location
NH
What model? I mean, surely some are stratospheric. But Prius transmission is probably peanuts.
 
Joined
Mar 20, 2016
Messages
3,404
Location
Western S.C.
As a general rule yes. You can't buy just the motor for the transmission from the manufacturer but you maybe able to get one from a wrecked car in a junk yard.
Probably true, but motor failures are rare on common hybrids. Unless it's abused somehow, there's not much to fail in a brushless motor except (eventually) the bearings.
 
Joined
Nov 9, 2008
Messages
19,781
Location
NH
I am looking at the Ford Marwick Hybrid FYI
Could go either way. If Ford only makes a handful, then any failure may be expensive, low demand and low number of cores. If it's the same transmission as they use elsewhere, then maybe it'll be cheap and plentiful; all indications are that it will be robust, due to being an eCVT. If one knows the transmission p/n then it could be looked up, otherwise it's a wait and see scenario, just like any other new model: wait for a few years, see what the trends look like.
 
Joined
Apr 3, 2017
Messages
3,083
Location
Ontario, Canada
Could go either way. If Ford only makes a handful, then any failure may be expensive, low demand and low number of cores. If it's the same transmission as they use elsewhere, then maybe it'll be cheap and plentiful; all indications are that it will be robust, due to being an eCVT. If one knows the transmission p/n then it could be looked up, otherwise it's a wait and see scenario, just like any other new model: wait for a few years, see what the trends look like.
Golden rule. Never buy the first model year of anything.
 
Joined
Jan 2, 2004
Messages
9,227
Location
California
I am looking at the Ford Marwick Hybrid FYI
Traditionally, Ford based their hybrid systems off Toyota’s patents - for the exception of the F-150 Powerboost. If the Maverick is anything like the Escape/Fusion Hybrid, the whole unit is scrapped.

However, Ford and Toyota eCVT units have proven reliable.
 

OVERKILL

$100 Site Donor 2021
Joined
Apr 28, 2008
Messages
50,693
Location
Ontario, Canada
Traditionally, Ford based their hybrid systems off Toyota’s patents - for the exception of the F-150 Powerboost. If the Maverick is anything like the Escape/Fusion Hybrid, the whole unit is scrapped.

However, Ford and Toyota eCVT units have proven reliable.
My recollection is that Ford and Toyota had both developed very similar in-house hybrid systems and decided to patent-share on the matter; a cooperation rather than competition. Both brought knowledge to the table which led to better products for both brands.
 
Joined
Aug 14, 2013
Messages
21
Location
Maine
Probably true, but motor failures are rare on common hybrids. Unless it's abused somehow, there's not much to fail in a brushless motor except (eventually) the bearings.
Some first gen prius's suffered early motor winding failures but it wasn't very common. I would consider ecvt's to be more durable than a regular slush box as there's just planetary gears and motors, eliminating all those clutch packs that wear out.
 
Joined
Feb 18, 2015
Messages
242
Location
Finland
base on my neighbor paying 10k to replace his cvt transmission in his Nissan Pathfinder
Nissan CVT is notorious for breaking down easily, so it’s not a good candidate to represent the whole field, what comes to the longevity of CVTs.
 
Last edited:
Top