- May 30, 2021
The battery posts are not the only connection points that can corrode and cause problems.
Battery hot connection to starter. Battery hot to wiring harness. Battery negative to frame. Frame to engine block ground straps. May be a couple of those.
Pull, check and clean each of those.
You’ve checked two (of a dozen) spots where corrosion can cause increased resistance, by checking the terminals.
Time to follow where the electrons flow, and make sure that corrosion, age, etc. hasn’t caused a problem.
Corroded or broken ground straps from frame to block are a common problem in 15+ year old cars.
Yeah, Id replae the battery in the FOB and see if that helps. My wife's Hyundai did the same thing recently and replacing the FOB battery fixed it.Hello,
Some times going to the car after being parked (even not for long), it does not unlock using the fob, you have to use the key and when you use the key only the door you stick the key in unlocks while usually all doors unlock automatically. When you get into the car and turn the ignition car starts normally. This happens like 2-3 times a years so I did not bother with it because if I take it to the mechanic everything would appear to be normal.
Now yesterday and today the same thing happened but the car would not start, you would turn the key and the car would appear dead no sign of life, the dash would not light. To start it you have to turn the key keep it turned for like 10 secs and the car starts. This is a new behavior that just started yesterday this made me wonder so I decided to post here.
Battery and alternator are new and I have also tested them with a battery tester and everything seems OK. Is it immobilizer related ? What could the problem be ? if you want further details let me know.
When this happens radio stations are lost, clock resets, OBDII also resets.
My car is a 2006 Daihatsu Sirion
Initially I bought the car used and it came without a FOB. I used the car for about a year without a FOB. Then around the 2nd year I found a used original FOB for about 30-40$ paired it with the car and been working since.Yeah, Id replae the battery in the FOB and see if that helps. My wife's Hyundai did the same thing recently and replacing the FOB battery fixed it.
Yes I have checked the fuse box under the bonnet for obvious issues, moisture, corrosion etc. I have also cleaned with sandpaper the battery poles and connectors. Since I cleaned and tighten down the cables to the battery everything work fine.If the battery power is disconnected for a period, then the radio presets are lost, clock reset and normally the fuel mapping is also set to default.
From your first description, it sounds like you have intermittent battery disconnection. And most propably a loose connection somewhere.
Have you checked the fuses the holder and the wiring to them corrosion, loose fitting?
I don't think we have Permatex or CRC here where I leave anything else I can use ? Will WD40 do ?Once you get the connections clean I would use a battery sealer on them like Permatex or CRC.
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Nice tip, mine are no as you describe. I will fix them this weekend. I do have regular grease so I can use that, but that will not attract dirt and debris ?Dielectric grease, or regular grease. The object here is to keep any stray acid from corroding the metal.
Make sure the terminals are all the way down on the posts, almost touching the top of the battery. There should be some battery post showing above the top of the terminal. If necessary, loosen the bolt fully and spread the metal apart some so you can push the terminal all the way down before tightening the bolt.
This may work to clean them but won't do much for protection, then again most people probably don't use anything and have no issues.Well I did a quick search and found the products attached. I think the most relevant product is WD-40 SPECIALIST CONTACT CLEANER
If that is all you have I would use it but I would check an auto parts store and ask them if they have any battery terminal protection spray, I would find it unusual if they didn't have any. I've been using it for a long time and never have any connection issues with my batteries.Nice tip, mine are no as you describe. I will fix them this weekend. I do have regular grease so I can use that, but that will not attract dirt and debris ?