Question about 2004 Volvo XC90

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Park Assist Sensor Busted

Park Assist Sensor Beeps for no reason while backing up. Any easy fix? I dread taking it to the dealer.

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  • PhotoJoeSwe Mar 26, 2009

    I have a 2007 V70 T5 and I get this message "PARK
    ASSIST SERVICE REQUIRED" from time to time. I always keep the sensors clean. What's the bulletin saying about this? I called Volvo and they said that it could be either one or more of the sensors that are failing or that the controlbox got moisture in it and need replacement.

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  • 49 Answers

Take it back to the dealer. There is a Technical Service Bulletin on the wiring for the Park Assist.

Posted on Feb 11, 2009

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{: ) The driver information center (DIC) displays SERVICE PARK ASSIST when the object alarm module detects a malfunction in the parking assist system and the system is disabled. The DIC also displays SERVICE PARK ASSIST when a loss of communication occurs with the object alarm module. Usually this is caused by faulty components or wirings. Better visit your dealer if still under warranty, for one park assist sensor only costs too much. If your bumper had been knocked off or had previous repairs outside the dealership, that's another thing.
The PARK ASSIST OFF message is displayed in the DIC when the parking assist system is disabled due to conditions that disable or inhibit the system. The object alarm module requests the DIC display PARK ASSIST OFF when it detects one of the following conditions:
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Park assist shut off intermittantly and now display reads "service park assist" permanantly. Dealer will not fix even tho' was warranty repair in Dec(less than 6 mos later problem was brought to their...


How do you know it's a sensor problem ? DTC - diagnostic trouble code ? Take's professional type scanner to read these DTC'S
DTC B0958 01: Parking Aid Rear Sensor 1 Left Corner Circuit Short to Battery
DTC B0958 06: Parking Aid Rear Sensor 1 Left Corner Circuit Short to Ground or Open
DTC B0958 08: Parking Aid Rear Sensor 1 Left Corner Circuit Signal Invalid
DTC B0958 21: Parking Aid Rear Sensor 1 Left Corner Circuit Incorrect Period
DTC B0959 01: Parking Aid Rear Sensor 1 Left Middle Circuit Short to Battery
DTC B0959 06: Parking Aid Rear Sensor 1 Left Middle Circuit Short to Ground or Open
DTC B0959 08: Parking Aid Rear Sensor 1 Left Middle Circuit Signal Invalid
DTC B0959 21: Parking Aid Rear Sensor 1 Left Middle Circuit Incorrect Period

Could have other codes
DTC B0967 02: Parking Aid Switch Circuit Short to Ground
DTC B1008 42: Calibration Data Not Programmed
DTC B1E3A 03: Sensor Power Circuit Voltage Below Threshold
DTC B1E3A 07: Sensor Power Circuit Voltage Above Threshold

There are a lot of other qualified repair shop's besides the Dealer .

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