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Discussion Starter #1
Problem: Central Locking System

Just like a lot of others on this forum I had my own issues with the aforementioned subject.
1. No lock/unlock
2. Dome light stays on
3. Central Locking button on dash no go.

Checked:

Looked at the PSE pump. No water damage. No corrosion. Checked all around pump and all looks good. Checked all around trunk no leaks. And just to be sure it's raining cats & dogs here in Norcal. So trust me. No leaks.

Kinda fixed:

Turns out the previous owner experienced what we've all experienced...at least those with this issue... the (white) connector had been disconnected.

Simple fix right. Got so excited. Thought to myself hallelujah I'm special....NOT!

So I reconnect it......

First thing comes on. Trunk light. Already worked without.
Second thing comes on Dome Light. Stays on
Third I get in the car click the button for the CLS and volare the locks lock and unlock.
Fourth I get out of the car, grab the remote and click to lock. Car locks. And not more than a breathe after the alarm sounds....Shoot
Fifth I grab the manual and see the remote can be re-synched. So I re-synch and even changed the batteries thinking it would help....Nope same thing. Alarm.
Sixth read every post on this forum and fell asleep.

So here's the deal. I checked all around and found the PSE Pump online for about $500 from a place in AZ.

Before I buy it I'm going to go back to the PSE pump and disconnect and open up and check and clean...carefully.

I'm so close I can feel it but do I really have to, should I have to buy the pump and call it a day?

Open to comments of any kind.

Thanks everyone!! for taking the time to read this and reply.

And once again sorry for starting up yet another similar thread.

Jz F)
 

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It may not be your PSE, it may be the alarm. It seems that once that battery goes dead, the alarm issues start. I may have been easier for the previous owner to disconnect the PSE system rather than replacing the alarm, since you can no longer just replace the battery on most of the models. Read on the forum about alarms and see if you can find out how to manually disconnect/remove the alarm for your vehicle (not the fuse, because it shares it with the PSE system. I would try that before buying a new PSE that may not fix your issue. Since the door lock and unlock, my first inclination would not be the PSE itself. Especially since you see no water damage and no corrosion.
 

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Discussion Starter #3
I appreciate the input. I was thinking how could it be the pump since it seemed to do its job. Another suggestion that a friend of mine made was that maybe there's a leak of air somewhere. Maybe in the vacuum line since if it's losing some air then that might make the alarm go off thinking that there's a break in. But that's a needle in a hay stack.

I'll research the alarm as you suggest.

Thanks much!!
 

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jznation PSE Pump and Alarm

Without being there with you to see all the details, my first impression is that your system is operating correctly. I had some of the same symptoms with my 98 R170. No. 1, I went back to the operator manual to reread the locking unlocking sequence and all I could find on the alarm system. (just to educate myself) No. 2, I found one relay in my PSC had a melted contact--- After buying what was said to be a non working PSE, I removed and replaced 4 open frame type relays in the original unit now it works fine. ( Other folks have had problems with the locking mechanism of the white plug.) VRG_._ Good Luck!
 

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My alarm horn shorted out and blew f9 with similar symptoms to yours. I chose not to replace alarm horn (I detest car alarms) and everything works fine. The battery in the alarm horn can leak causes various symptoms from constant alarms, to intermittent alarms or no alarm. The alarm horn is fairly cheap to replace.
 
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