Can I ask that someone clear up a question, please

[zman1858]

This about the post about water damage, can someone please read the last post I did on this topic. I need to order a part and need an answer to decide what to order...thanks so much.....link to the water damage question below

http://www.renntech.org/forums/index.php?/topic/35757-98-boxster-wont-crank/

[1schoir]

This about the post about water damage, can someone please read the last post I did on this topic. I need to order a part and need an answer to decide what to order...thanks so much.....link to the water damage question below

http://www.renntech....ter-wont-crank/

The M535 Unit is the central alarm control unit, also called the Immobilizer (Immobiliser in the UK). That is also what some refer to as "the brain" if they are referring to a unit that has to be reprogrammed. They are not talking about your DME (Digital Motor Electronics?), which is the car's ECU (Electronic Control Unit) and which is located inside the rear trunk of your Boxster, at the top left corner of the firewall.

Yours should have the same markings as this one:

The new immobilizer does have to be reprogrammed before the car will run.

Regards, Maurice.

Edited November 10, 2010 by 1schoir

[zman1858]

Do you think that it will be better to buy one from Pel Parts and have it programmed. I figure, $400.00 plus programming, a new unit would be better than a used one and the part in the trunk should be fine.......any thoughts....thanks for the fast reply

Edited November 10, 2010 by zman1858

[1schoir]

Do you think that it will be better to buy one from Pel Parts and have it programmed. I figure, $400.00 plus programming, a new unit would be better than a new one and the part in the trunk should be fine.......any thoughts....thanks for the fast reply

zman:

It's unlikely that the DME in the trunk was affected, and it certainly doesn't suffer from the same handicapped location as the central alarm control unit (which Porsche somehow managed to put at the absolute lowest point on the floorpan of the Boxster).

Regards, Maurice.

[zman1858]

Thanks...I will order one from Pel Parts tomorrow, 400.00... I have a friend that should have a programmer, if not, 100.00 - 150.00 more to program. not bad. You can bet there will be some drain holes in the floor board now...heheh

[Loren]

If you are speaking of the immobilizer - you will need the cars IPAS codes to program it.

Be sure to get those and all valid keys before you attempt programming. My advice - find someone that has done this before.

[Richard Hamilton]

The retail price of these units (according to the price search here) is £391. Would it not be worth trying Sunset (Porsche Parts at Dealer Cost link), as they are usually cheaper?

As Loren says, you need to find someone who can program it correctly first. If you end up having to go to a dealer you might find they may not look favourably (price-wise) on programming a unit you have bought elsewhere.

[1schoir]

Zman:

Definitely heed Loren's advice...IIRC, a new immobilizer can only be programmed once and if not done correctly you end up with a brick.

Regards, Maurice.

[zman1858]

The dealer here has one for 391.00...not bad....they are 60 miles away....I have roadside asst....they love me....Called them and said I need a tow from Pensacola Fl to Mobile AL....they were no at first...explained that it was about 1 hour away....at lease I gat a laugh from that....it will done Saturday. Dealer said that the key fob sometimes won't program, which means another 150.00...love the dealer... I will have drain holes for the next rain storm

[zman1858]

working now.....400.00 for brain....175.00 for key fob...240.00 to program...