Supporting Membership - Advertising - XLR Shop
Cadillac XLR Knowledge Base

2004 - 2009 Cadillac XLR: GM TechLink: No Fob Detected Message

Source:  GM TechLink
Date:  February 20, 2014

A No Fob Detected message may be displayed on the Driver Information Center of some 2004 - 2009 Cadillac XLR and 2005-2013 Corvette models when attempting to start the vehicle. The engine may not crank/start and the vehicle’s doors may not open through passive entry. However, the vehicle will always start when the Remote Keyless Entry transmitter (key fob) is placed in the instrument panel compartment pocket. This condition may be caused by an internal transistor of the Remote Control Door Lock Receiver (RCDLR) module not operating properly.

To diagnose this condition, be sure the vehicle battery is adequately charged to start vehicle.

Next, remove the battery from the key fob. Using a DVOM, measure the voltage.  Be sure the key fob battery voltage is between 2 to 3 volts. If not, replace the battery. Test operation of the vehicle again. If the vehicle no longer exhibits the condition, the vehicle is repaired.

If the vehicle has a known good key fob (not placed in the instrument panel compartment pocket), press the Engine Start Button and listen for a click noise or a series of click noises from the RCDLR. If there is only one click (instead of a series of clicks), the transistor internal to the RCDLR is not operating properly. For this condition, replace the RCDLR module.

The RCDLR module on the Corvette is located above the radio behind the instrument panel trim on the right side. (Fig. 12) On the XLR, the RCDLR module is located on the top right of the instrument panel under the upper instrument panel pad. (Fig. 13)

f13-rcdlr-xlr
Fig. 13

0 (0)
Article Rating (No Votes)
Rate this article
Attached Files
There are no attachments for this article.
Comments
There are no comments for this article. Be the first to post a comment.
Name
Email
Security Code Security Code
Related Articles RSS Feed
2004 Cadillac XLR: XM Antenna Installation on XLR
Viewed 1885 times since Tue, Dec 20, 2016
2005 - 2009 Cadillac XLR: Service Bulletin: #PIC5485A: Noticeable Difference In Audio Volume Level When Selecting Favorites Or Switching Between The AM/FM Bands CD And/Or XM - (Oct 24, 2011)
Viewed 1274 times since Tue, Mar 21, 2017
2004 - 2006 Cadillac XLR: Service Bulletin: #PIC3865B: Intermittent Poor and/or No Radio Reception FM Stations - (Jul 11, 2013)
Viewed 1710 times since Fri, Dec 30, 2016
2009 Cadillac XLR: Service Bulletin: OnStar Gen 8.xC Module Inoperative/Vehicle Battery Discharged
Viewed 1409 times since Sun, Dec 18, 2016
2004 Cadillac XLR: Resetting the Engine Oil Life Monitor
Viewed 1601 times since Tue, Dec 20, 2016
2009 Cadillac XLR: Service Bulletin: #PIC5346A: Normal Characteristic - Unable To Answer a Second Incoming Bluetooth call or Continues To Ring After Answering a Second Incoming Call
Viewed 1202 times since Tue, Mar 14, 2017
2004 - 2006 Cadillac XLR: Service Bulletin: Wipers Will Not Park
Viewed 1461 times since Sun, Dec 25, 2016
2005 - 2009 Cadillac XLR: TechLink Article: Noticeable Difference in Audio Volume Level
Viewed 1716 times since Tue, Dec 20, 2016
2009 Cadillac XLR: Service Bulletin: Radio Does Not Mute Enough When OnStar Turn-By-Turn Navigation Directions Are Announced
Viewed 1798 times since Sun, Dec 18, 2016
2004 - 2009 Cadillac XLR: Service Bulletin: #PIP4925A: SES Light with Fuel Trim and or Oxygen Sensor Codes - (Mar 21, 2017)
Viewed 2284 times since Wed, Mar 22, 2017