What does code 33 mean 2006 Grand Marquis airbag

Codes 32 to 35

These codes are signaled by three flashes, a two-second pause and the number of flashes that corresponds to the second digit. Code 32 (triple flash, pause, two flashes) means the driver side airbag has a circuit open or with high resistance, Code 33 (triple flash, pause, two flashes) means the passenger side airbag has a circuit open or with high resistance, Code 34 (triple flash, pause, four flashes) means the driver side airbag has a shorted circuit or one with low resistance and Code 35 (triple flash, pause, five flashes) means the passenger side airbag has a shorted circuit or one with low resistance.

I personally would let some one who knows what they are doing look at it. Grounding or feeding the wrong wire could set off an air bag and hurt someone.

You need to have the code read with a scan tool.

this means code 51- Denny

Actually I don't recommend car owners working on the air bag system. It can be very dangerous should one of the bags deploy by accident.
Code 33 is for an open or high resistance on the passenger side bag circuit which could be several different components or the wiring harness.

The flashing light on your car is telling there is a problem. On some vehicles require a OBD2 code scanner for the diagnosis. Once you know the code, you can most likely repair it yourself.

2005 Towncar SRS Code 33 (3 flash + 3 flash, repeat this set for twice. then Beep 5 times pause x 5 = 25 beeps every 30min).

This means you have problem with left (Driver) side pretentioner (Seat belt retract system).
It doesn't mean physical belt or retract mechanism.It is just bomb wiring which is part of airbag system.
When airbag deploy, passenger must stay tight in seat otherwise body lean to front then slam back to seat by airbag.
if belt is loose or delay to lock, passenger's body rocks back and forth.So, system use small bomb (Fire power) to lock and retract seat belt when airbag deploy.There is small bomb and igniter in part of Seat belt retractor.
Code 33 is warning for this part on 2005 Towncar.(older model is different meaning in Ford/Lincoln, it's possibly passenger side airbag system for earlier model)
Before you work for any part of Airbag system and touch any "Yellow connector", * *Disconnect battery (negative side is good enough) and wait at least 5 min to clear all power in system**.(Airbag store back up power for few minutes to be able to deploy even in case if power disconnected)
by the way, you should move your driver seat most forwarded position before you disconnect battery to make it easy to work with seat belt.
locate driver side seat belt retractor (in center pillar between front and rear door, you may have to fight with weather strip)

Locate Yellow connector on bottom of Seat belt retractor (it's called "Pretensioner")it is located on very bottom of rear side of retractor.
only one yellow connector. (make sure your battery is disconnected)
Check its physical connection or looseness.if connection looks fine, you may have to replace whole seat belt ($180-$200 in Lincoln dealer)
You can check if pretensionor is good or bad by regular tester, but unless you know how, I won't tell (because I don't wan't you to blow out pretentionor).

A flashing airbag light can mean one of two things. The first possibility is that your battery is in death row. Have it tested at your local parts store. The second possibility is that there is an actual problem with the airbag system. Below is a list of airbag codes, which will flash on the warning light. For example, the light will flash once, pause and then flash twice == 12.

12=Low Battery Voltage
13= Air Bag Circuit Shorted to Ground
14=Primary Crash Sensor Circuit Shorted to Ground
21=Safing Sensor Not Mounted to Properly
22=Safing Sensor Output Shorted to Battery Voltage
23=Safing Sensor Circuit Input Feed/Return Circuit Open
24=Safing Sensor Output Feed/Return Circuit Open
32=Driver Side Air Bag Circuit High Resistance or Open
33=Passenger Side Air Bag Circuit High Resistance or Open
34=Driver Side Air Bag Circuit Low Resistance or Shorted
35=Passenger Side Air Bag Circuit Low Resistance or Shorted
41=RH Primary Crash Sensor Feed/Return Circuit Open
42=LH Primary Crash Sensor Feed/Return Circuit Open
44=RH Primary Crash Sensor Not Mounted to Vehicle Properly
45=LH Primary Crash Sensor Not Mounted to Vehicle Properly
51=Air Bag Diagnostic Monitor Internal Thermal FuseFuse Blown Due to Intermittent Short to Ground
52=Backup SupplyVoltage Boost Fault
53=Primary Crash Sensor Circuits Resistance to Ground or Air Bag Diagnostic Fault

Hope this helps...

If you are hearing a series of 5 beeps, 5 beeps and then a pause and it repeats, the airbag light is burnt out, and there is an error that the LFC ( light Flash Code ) needs to report.

Pull the cluster, and replace the airbag light, and then pay attention to the LFC that will be given ( example, 1 flash short pause, 8 flashes, slightly longer pause, then repeat the 1-8 pattern again, jsut as an example ).

Try cycling key, on, off, on, off, on, and leave on (not start) & count flashes of check engine light. 3 flashes, pause, then 3 more is code 33. 2 flashes, pause then 2 more, is code 22 etc. See what you get for codes first before guessing on replacing parts. 5 flashes, pause, then 5 more, is code 55 which means end of message (codes.)

the beeps are an airbag trouble code, that code is for the following:
In most cases this problem is caused by the rotating ribbon circuit contact under the steering wheel having a broken filament, the part is known as a clock spring contact, u will need to properly disarm the airbag and remove the steering wheel to access the part. WARNING: Failure to follow factory Airbag disarming protocol can result in an unexpected Airbag deployment and possible serious personnel injury or death.