Solenoid Was Replaced along with Transmission Fluid?

2003 JAGUAR S-TYPE

47,000 MILES • 3.0L • AUTOMATIC

AUSTINO

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I have changed and I replaced one of the solenoid (black colour solenoid) and it is a used solenoid.The brand name is (bosh). I also changed the transmission fluid. I bought the solenoid from someone who fix BMW cars. However,when I drive the car it changes gear 1,2,3, 4 times rough but not smooth.When the car stops and to move again it does not change gear again but in order for it to change gear again, I would have to turn off the vehicle and restart it again for it to change gear.Do you think the car needs to programme or reset to fix the problem?What do you think?

Jun 21, 2026 at 11:10 PM

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Hello,

You must have the correct fluid in the transmission are it will act the way you are describing. Also, I would run the codes to see if any are stored. This video will help you gather the codes please list any here.

https://www.youtube.com/watch?v=LBCpCWEFnTg&t

I would dump the fluid out and refill it with Please go over this guide and get back to me. Here is the fluid type to be used.

Shell M-1375.4 / ZF Lifeguard 6 equivalent

The ZF transmission is temperamental of the fluid type and will make the shifting erratic. Let me know how it goes

Jun 22, 2026 at 4:07 PM

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