Taffy

Thank you for that valuable information. I don't have that problem (yet - and hopefully I won't) but it's good to know the fix is relatively easy.

If you prefer paper, you can use the Haynes Dodge Grand Caravan and Chrysler Town And Country manual. 2008 thru 2012. This book is aimed at the US market and therefore does not cover RHD or Diesel models. Nevertheless it is still very useful.

I believe the system can be disabled by the dealer. It is an option accessed via the Witech. In the UK TPMS is compulsory for all passenger vehicles since November 2014. As yours is older than this it can be done without breaching any regulations.

I have used this company. Based in London and very helpful. If they haven't got what you want, they will source it for you. JeepChryslerParts.co.uk

I found this: I think it's what you're looking for https://www.ebay.co.uk/itm/2008-2015-Voyager-Grand-Voyager-Owners-User-Manual-Guide-Operating-info/182404788452?hash=item2a782c30e4:m:mEMO5k0hZiBlzOTpr75e62A

I have a user manual with my 2011 GV. If you need any info in particular I will be happy to look it up for you.

I have never had a mark 4. I've had my mk 5 for four years now and I have put nearly 60k miles on it. The previous owner didn't take care of it and left me with a few bits and pieces to sort out. Saying that, the car has never let me down. My gearbox has been fine but I will be changing the fluid soon as it's now approaching 100K miles. I do my own servicing regularly using good quality parts and fluids. My issues so far: Rear seats would not stow - fixed. Radio occasionally locked up - fixed Air con leak - fixed Front caliper binding - fixed Rear caliper binding - fixed Driver's seat would not adjust more than 1 inch forward or backwards - fixed. As you can see, there has been nothing major. Fingers crossed it stays that way.

Fixed it! I finally got my seat working properly again. I had already eliminated the switches as the cause, leaving only the seat module or (so I believed) the position sensor. Today I finally got an opportunity to remove the seat module. A replacement module would have fixed the problem, but I didn't have one to try, so I decided to see if I could find anything wrong with this one. It came apart easily enough and I was able to get at the circuit board. I began by unsoldering all the connectors and relays, then soldering them up again, just to make sure there were no dry joints. Then I noticed the pins of the power connector were slightly bronzed in colour. They were tarnished. I cleaned them with a fibre pencil, reassembled the module and refitted it to the car. The seat now works perfectly. Result!

The alarm is triggered by door, bonnet & tailgate switches. Also there are internal ultrasonic sensors and a tilt sensor in case someone tries to tow it away. You can rule out the internal sensors by switching them off. To do this, when locking the car press lock on the key fob 3 times within 15 seconds.

Unfortunately no. My reader is just a basic "one size fits all" and not geared towards any particular brand.

I don't think your problem was quite the same as mine. I also have an electronics background. I have already swapped out the switches but it made no difference. I haven't been able to obtain a seat module so am unable to check that. I am still hoping to get one, even to borrow just to prove the point. My final idea is to fit a new changeover switch directly to the forward/backward motor, but I would then lose the memory function.

I received the pdf's. Thank you very much for those. It's a fair bit of reading I recognise the schematic you posted though. I have the same disc. It's very handy and worth having. Just a bit of a pain to configure the system so that the wiring diagrams show properly. Got there in the end though.

Thank you for your offer. I will PM you my email address. I'd like to get this thing sorted. It almost failed the MOT this year because the seat couldn't be adjusted correctly.

Thank you. I am not sure which diagrams you are referring to. I have the T&C manual which doesn't cover diesel engines, and also the Chrysler Workshop CD Manual which again has schematics, but they only go as far as block diagrams. I should really double check this. However, if there are only switches and a module, then because the switches have already been eliminated as a possible cause, either the module is faulty or there is some issue with the wiring. I guess my next step is to see if I can obtain a known functional module. Although, it does occur to me that since you say you're experiencing the same problem then this is perhaps a known issue - and someone somewhere (probably working for Chrysler) knows the cause and how to remedy it.

Oh. I just googled p0740 code. I got this: When the code P0740 is set in the Powertrain Computer, it means that the Powertrain Computer or PCM is seeing greater than a 200 RPM difference between the rotational speed of the Torque Converter and the Transmission Input Shaft. You clearly know your way around cars, but this sounds like a possible fix by replacing the trans fluid?