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Old 13-01-18, 07:15 AM   #1
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Default Transmission issues?

Hey, i have a 2003 model 406 with automatic transmission. Sometimes when i shift from P to D, i get a flashing light on the dash beside the R (on the graph shownig gears P R N D...) and the car behaves unnormally. In addition, when i shift from P to R, it takes about 2 seconds to engage the reverse.. I scanned the car with obd2 scanner but got no codes related to the transmission. Any help is appreciated
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Old 13-01-18, 07:57 AM   #2
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Hi welcome to the forum

I donít know your particular question although on 2 automatic cars i have owned when the gears played up i found topping the auto oil up fixed the problem

Could the light you see be low transmission oil level

Sorry cant be more helpful
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Old 13-01-18, 08:41 AM   #3
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Yep check/change the oil it has probably never been changed due to it being sealed for life as the dealers call it but they do use oil over time leading to rough changes and locking out of top gear
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Old 13-01-18, 12:09 PM   #4
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Sealed transmission are money traps from the dealers..
Thanks guys, will check the oil and post a reply for any update
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Old 13-01-18, 04:32 PM   #5
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Hi & welcome.

First things first: change the oil.

Peugeot say it's sealed for life but this is a vicious lie.

It's crucial to use the correct oil: Esso LT71141.

If that doesn't improve it then you're probably looking at a new set of solenoids (and ideally software update too) for the valve block.
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Old 15-01-18, 02:37 PM   #6
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UPDATE: So i changed the transmission oil yesterday, it was so black. Then i tried the car and the problem is still there.
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Old 17-01-18, 07:25 PM   #7
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The gearbox is the "AL4" and aussiefrogs.com is a good place to read about them.
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Old 17-01-18, 07:49 PM   #8
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406 uses AL4 and ZF4HP depends on what engine is fitted but i have found sometimes once oil is changed it will gradually improve my C4 with al4 had lock out issues when cold but is fine now after 2 oil changes and a bit of use
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Old 17-01-18, 08:15 PM   #9
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The problem is that i bought this car with no user manual, and the informations about the car are not known for me (HDI, Al4 or zf4hp...). So i am working my way through VINs and stuff to know my car.. The following image contains some infos, the transmission type is not included, but as my friend reliable_406 said the transmission can be known from the engine type.. So here is some infos i found from my VIN. And, is there a way to know my transmission type myself?

Sent from my LG-H818 using Tapatalk
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Old 17-01-18, 09:05 PM   #10
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Post or PM the last eight digits of your VIN, and we can look up all the details in the Peugeot Service Box.
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