Need new Fob

[HellRazor35]

Looking for suggestions on where to purchase new Key Fobs? Only have one key Fob and getting the fob battery charging warning. The fob is the sealed type that the battery cant be replace...well it can but rather get 2 new ones

Any suggestion on the best place to get replacements?

[andrewwynn]

Search the e53 forum, somebody posted link to a bmw approved vendor that was like $50 less per key. In fact just got my stimulus payment so I think that's what I'm getting first. My fob stopped working remotely over a year ago. I lost my spare on the eclipse road trip in '17.

[HellRazor35]

Originally Posted by andrewwynn

Search the e53 forum, somebody posted link to a bmw approved vendor that was like $50 less per key. In fact just got my stimulus payment so I think that's what I'm getting first. My fob stopped working remotely over a year ago. I lost my spare on the eclipse road trip in '17.

Tried searching the board and come up with nothing...keywords
"Key Fob"
"Key Replacement"
"Fob Replacement"
"Key Dead Battery"
"Fob Rechargeable battery"

Vin: 4USFE43517LY78582
Chassis: E70
Model: 2007 X5*3.0si
Engine: N52B30O1
Prod: 12/2006

[Zulu95]

You do not give any info as to which year/model you are talking about. For later E70 models(LCI) I would suggest biting the bullet and going to the dealer as I found out the hard way this is the cheapest alternative.
Cloning a key can brick you CAS module meaning you need to have the vehicle flat bedded to the dealer and a new CAS module installed and programmed. That was around $1300 in my case. Then I still required a key that cost $540 from the dealer.
Your money, your choice.

[Cyrix2k]

The short answer is this is a "if you have to ask" type of deal. Your best bet is to order from a dealer.

Originally Posted by Zulu95

You do not give any info as to which year/model you are talking about. For later E70 models(LCI) I would suggest biting the bullet and going to the dealer as I found out the hard way this is the cheapest alternative.
Cloning a key can brick you CAS module meaning you need to have the vehicle flat bedded to the dealer and a new CAS module installed and programmed. That was around $1300 in my case. Then I still required a key that cost $540 from the dealer.
Your money, your choice.

Long answer: It is possible to cut and program the keys available on ebay/aliexpress/etc. The big issue is the security system on E70s which consists of the CAS (immobilizer), DME, key, and the EGS or transmission computer. There are a couple things to know about this system. 1) The key is authenticated by the CAS and the DME and EGS talk to the CAS. 2) When your vehicle was produced, 10 key values were programmed into the CAS at the factory which are known by BMW. IIRC, 4 keys were included with the vehicle which leaves 6 "slots" available in the CAS. As spare keys are ordered from BMW, they use the digital keys already stored in the CAS. Once all 6 spares have been used, BMW will say they can no longer order spare keys unless they change the CAS. Aftermarket programmers work by altering the key values stored in the CAS. This means that old, lost keys can be overwritten, effectively nullifying the 10 key limit. It also means that it is relatively dangerous to use the aftermarket programmers as you risk corrupting the CAS. They only work with specific CAS firmware versions and, in fact, will downgrade the CAS if on the latest firmware so that the keys can be manipulated. There is a very real risk of corruption during the downgrade process. Back to the DME & EGS... they have security codes as well which are stored or known by the CAS. When those codes don't match, the car won't start (for the DME) or it will refuse to shift out of park (for the EGS). The security codes for the DME can be read by aftermarket tools and aren't a big deal to restore in the event the CAS is corrupted. However, for LCI E70s, no aftermarket tools can currently reset the EGS security which means you're stuck with a vehicle that will refuse to move. The earlier E70s, like yours, can supposedly be reset although I haven't done it.

[andrewwynn]

Where are you getting your replacement keys?
https://r.tapatalk.com/shareLink/top...ink_source=app

For future reference, try searching with + in front of each word :

+Key +replacement

Or quotes around;

"Replacement key"

[Zulu95]

Further to what Cyrix2k said:
BMW introduced some new optional security upgrades for the LCi models. I researched this when our 2013 was totally BRICKED! Any attempt, legal or illegal, without the proper protocols will brick the car. Total shutdown. Everything dead. Some suggested it was a mistake on the part of the key cloning operator. Immaterial as the outcome is the same. BRICKED!
BMW are doing everything possible to prevent simple key cloning thefts. The fact that those measures result in making them the only source for replacement keys is a bonus. With an exclusive market comes exclusive pricing. That is the way of the world. It is also a fact that some devious criminals will overcome the security upgrades by some means and those in turn will get shut down by new security measures in a never ending cycle. Each time we can expect to pay through the nose because nothing is cheap or free with BMW.

[HellRazor35]

Issue resolved, since the Fob I have has a soldered in place battery. Ordered a new Fob Case and battery

- Cracked the old one open, removed the green board and de-soldered and re-soldered the new battery.

- Fitted to the new Fob case

- Issue Resolved

You know its funny, I am not new to Bimmers, I LOVE my E34's S50/ZF's Swaps. Slammed with ACS S5 Kit and ACS Type II 19" rims. Even did my own Garrett T5 Turbo 6psi boost on the one. Flashed ECU no standalone management....Real sleeper on the road.

- Since getting the 2-2007 X5 for my daughters and venturing into the Bimmer ODBII (n52n) world and trying to cut my teeth on all the changes that came with the ODBII and technology changes that BMW implemented.

- Its been tough enough getting up to speed and learning/researching all the issue that the N52N has. Worst of it is that there is no Bentley Manual for the 2007 X5

- This was my bible for my e34's when I did my swaps and repairs and still is to this day. Did not need all the scanners to fix M50tu and S50 issues


I am assuming that I am going to need to buy a couple Bentley Manuals
- One to cover the X5 in general
- Another to cover the n52n


or is using ProTools and ISTA+ enough?

Finally got ISTA+ to talk to the X5's last night

These 2007 X5 have been a real pain in the a$$ so far, not so much the mechanical part, but rather finding good information on part locations. IE TPS location?

Is it in the back behind that carpet in the right side or is it mounted under the frame or under the passenger glove box?

Both X5's are equipped with BlueTooth and only one can sync to a Phone. Researching for this is no different trying to find locations or BT modules.

Ask questions on XOutPost most always creates more "Rabbit Holes" to go down

[andrewwynn]

Trying to find a PDF of Bentley for e53/m54 I never did but for $15 found a very detailed PDF shop manual on eBay. 3500 pages and has had what I've needed so far. Look for e70 and your motor just make sure it's a true PDF you can search not photo flip book